In this episode, Luke asks Jay if he can have his first sip of beer from Jay's bottle, and Jay ultimately declines, saying (to the documentary crew) that Phil should be the person to give Luke his first sip of beer. However, in Season 2, Episode 24, while making a birthday video for Jay, the Dunphy kids view footage of Luke saying, "Grandpa is really cool. He once let me drink some of his beer."
While talking on the staircase Alex Dunphy is wearing the same shirt she had on that she spilled mustard on but while talking to her sister there is no stain.