Corrected entry: During the sperm song, all the kids are in the living room. After the girl with no front teeth sings, all the kids stand up and say in unison "Every sperm is wanted." In the front shot, watch the kid in the green jumper. He forgets the word wanted and only starts singing it when the other kids do. It's quite funny. (Only noticeable on Special Edition DVD).
Corrected entry: When the waiter leads the viewer to his childhood home, he wears his napkin over the same arm throughout except for one shot, when it suddenly changes to the other arm and then back again.