Audio problem: At the end when Greg and Pam get married, Kevin plays a song on a set of pipes, however, the notes he plays are wrong - when he blows the short pipes, a low note is made, and vice versa. This should be the other way around. (01:45:45)
Audio problem: As Greg and Pam are about to get married we see Kevin playing the panpipes. The sounds are not in sync with his mouth as he blows down each pipe.
Audio problem: When Jack tells Bernard from a side angle "you will force me to engage you" his jaw is not moving.
Answer: Truth serum doesn't automatically make you speak the absolute truth - all it can do is make you say what you believe to be the truth. If Gaylord believed himself to be Jorge's father, then he would say that under the truth serum, even if it ultimately turned out not to be the case.
Tailkinker ★
Gaylord (Greg) was also drunk when he went on his monologue of spilling "secrets" about others in the room.