The sword of Bruncvik, which can kill dragons, comes from an old Czech legend. According to the legend, Bruncvik has obtained the sword which can kill any creature. While traveling the world, he killed a dragon who was about to kill a lion. This is the reason why there was a dragons blood on that sword (and why there is a lion on the coat of arms of the Czech Republic).
Dean tells Bobby, "A couple of Buddy Hollys doesn't really seem like News of the Weird." He is referring to the legendary singer/songwriter Buddy Holly, who died at the age of 22 in a small plane crash in 1959.
In the scene where Sam calls Castiel, there is a Voodoo Doughnuts box on the table, an iconic Portland doughnut shop.
When Cas reminds Dean that he warned against restoring Sam's damaged soul, Dean replies, "What was I supposed to do? Let T-1000 walk around, hope he doesn't open fire?" He is referring to the second generation android assassin from Terminator 2: Judgment Day (1991).
When Bobby says that Sam "went straight up Menendez on me" he's referring to the Menendez brothers who murdered their parents in California. The case is documented well in the true crime mini-series: Law & Order True Crime (2017).
Lyle and Erik Menendez were both convicted in 1996 of murder in the first degree and conspiracy to commit murder, supposedly for killing their rich parents in order to inherit their fortune. The brother's defense was that they had both been sexually abused by their parents for most of their lives, they told several people about the abuse both as children and as adults, all of whom testified on behalf of the defense; there was physical evidence of the abuse as well, numerous nude photos that were taken of the boys by their parents, even photos of the mother lying in bed with both boys who were 13 and 10 at the time, all three of them were naked. The brothers claimed their father told them he would kill them if they didn't keep quiet, and even went so far as buying a gun and threatening them with it, so they said they killed their parents in self defense. The brothers claimed that Lyle got the brunt of the abuse, their father was gone on business a lot and that's when most of it happened. Lyle testified that from the age of 13 his mother would rape him on an almost daily basis while the father was gone, she would hold him down and rub his penis in order to make him become erect enough for his mother to sit on his penis forcing it inside her; and when Erik was old enough she would sometimes make him lay next to them in bed and rub his penis while raping Lyle. Erik claimed that on the infrequent times his father was home he would get drunk and force him to touch his father's penis, and he would get badly beaten if he did not comply. The ADA prosecuting the case argued that a man cannot be raped by a woman because "they lack the equipment to be raped", she told the jury that the only way Lyle could get erect enough to penetrate his mother's vagina was if the sex was consensual and he enjoyed it and was aroused by it, she said a man cannot be forced to get an erection against his will. Something that is now known to be completely untrue, neurologists have proven that physical stimulation in the right area can cause an erection even if the man is not willing and far from being aroused mentally. She also told the jury that Erik was a homosexual and "enjoyed touching penises, no matter who they belonged to". The jury in this trial deadlocked, half of them voted not guilty on all counts, the other half voted not guilty on murder in the first degree but guilty on manslaughter in the first degree. When asked about the trial all jury members said they believed without a doubt the boys were sexually abused, the just could not agree on how much responsibility it absolved them of. When the retrial began the new judge on the case ruled that the boy's sexual abuse was irrelevant in respect to the murders and ordered the new jury would not hear any evidence or testimony about sexual abuse and that they would not be allowed to vote on the lesser charge of manslaughter. So as the second jury heard none of the evidence about the sexual abuse they found both boys guilty of first degree murder and ordered them sentenced to life in prison without the possibility of parole. Afterwards when asked if they would have ruled differently had they heard all the evidence the first jury did about the boy's abuse they all said had they known they would not have voted to convict them. This was one of the first widely followed and reported on cases of a male being raped by a woman, which at the time was thought to be impossible by most. While the brothers are still in prison as of 2022, despite repeated efforts to get new trials, their case at least helped open the door to looking at men being the victims of rape differently.
Lyle and Erik Menendez were both convicted in 1996 of murder in the first degree and conspiracy to commit murder, supposedly for killing their rich parents in order to inherit their fortune. The brother's defense was that they had both been sexually abused by their parents for most of their lives, they told several people about the abuse both as children and as adults, all of whom testified on behalf of the defense; there was physical evidence of the abuse as well, numerous nude photos that were taken of the boys by their parents, even photos of the mother lying in bed with both boys who were 13 and 10 at the time, all three of them were naked. The brothers claimed their father told them he would kill them if they didn't keep quiet, and even went so far as buying a gun and threatening them with it, so they said they killed their parents in self defense. The brothers claimed that Lyle got the brunt of the abuse, their father was gone on business a lot and that's when most of it happened. Lyle testified that from the age of 13 his mother would rape him on an almost daily basis while the father was gone, she would hold him down and rub his penis in order to make him become erect enough for his mother to sit on his penis forcing it inside her; and when Erik was old enough she would sometimes make him lay next to them in bed and rub his penis while raping Lyle. Erik claimed that on the infrequent times his father was home he would get drunk and force him to touch his father's penis, and he would get badly beaten if he did not comply. The ADA prosecuting the case argued that a man cannot be raped by a woman because "they lack the equipment to be raped", she told the jury that the only way Lyle could get erect enough to penetrate his mother's vagina was if the sex was consensual and he enjoyed it and was aroused by it, she said a man cannot be forced to get an erection against his will. Something that is now known to be completely untrue, neurologists have proven that physical stimulation in the right area can cause an erection even if the man is not willing and far from being aroused mentally. She also told the jury that Erik was a homosexual and "enjoyed touching penises, no matter who they belonged to". The jury in this trial deadlocked, half of them voted not guilty on all counts, the other half voted not guilty on murder in the first degree but guilty on manslaughter in the first degree. When asked about the trial all jury members said they believed without a doubt the boys were sexually abused, the just could not agree on how much responsibility it absolved them of. When the retrial began the new judge on the case ruled that the boy's sexual abuse was irrelevant in respect to the murders and ordered the new jury would not hear any evidence or testimony about sexual abuse and that they would not be allowed to vote on the lesser charge of manslaughter. So as the second jury heard none of the evidence about the sexual abuse they found both boys guilty of first degree murder and ordered them sentenced to life in prison without the possibility of parole. Afterwards when asked if they would have ruled differently had they heard all the evidence the first jury did about the boy's abuse they all said had they known they would not have voted to convict them. This was one of the first widely followed and reported on cases of a male being raped by a woman, which at the time was thought to be impossible by most. While the brothers are still in prison as of 2022, despite repeated efforts to get new trials, their case at least helped open the door to looking at men being the victims of rape differently.