The use of "spaghetti" came from a meme where people recount stories of awkward situations that always end with spaghetti falling out of their pockets. I guess this was turned into a slur for autism because of its use to describe the awkward situations some with autism get into.
Having been on constaff once or twice, the temptation to eject spaghetti tossers is strong, but for different reasons. Most venues fine cons when they have to go above and beyond on cleaning stuff up, and piles of cooked noodles counts towards cleanup fines.
