Harry "corrects" Fergus for saying "I ain't gonna phone him." Boomer parents were notorious for saying "Don't say 'ain't', 'ain't' ain't a word." Not true then, even more so now. Originally a contraction for "am not" as "an't", it was used by Jonathan Swift in Letter 19 of his journal to Stella (1710-13) to mean "is not". The addition of the letter "i" was added afterward and first appears in print in 1749, though was in common usage since 1650. Its first appearance in a dictionary was in 1830. While still considered "vulgar" and "bad" and "improper" by the word police and language elitists, it is a proper word in a language where usage determines language, not archaic narrow minded rules set forth by priests and the ruling class and propagated by academic and big tech enablists pushing an agenda from a long dead world, despite the evidence of thousands of words having gone through changes in the meanwhile.
"He hung himself" is proper English, despite the admonishments of Harry that "pictures are hung, people are hanged." "Hanged" is an older form for the past tense of "hang". "Hung" is the more recent form and would have replaced "hanged" entirely were it not for the myriad of legal documents using the former form, which would have needed to have been changed with the acceptance of the latter form. Rather than spend innumerable hours on a near impossible task, "hanged" was retained specifically as the legal term for the the hanging of a person. It remains in common usage due to being retained as a legal term, whether describing the subject or the object, just as "hung" is. In language, usage determines meaning and definition. Examples: He hanged a picture on the wall (archaic), he hung a picture on the wall (modern) (both acceptable). He hanged himself, he hung himself (both acceptable). As a professor of literature and a PHD in law, she should be aware of these nuances. The idea that "hanged" is the only word to be used for the hanging of a person is a sub-urban myth propagated by historically illiterate language elitists, seeking to reconstruct fluid word usage to narrow and rigid terms and conditions that only they determine, rather than allowing for common usage.