Revealing mistake: During the keg drinking contest, it is clear that when they vomit on each other that the "vomit" isn't coming from their mouths but come from a pipe aligned with their mouth next to the side of their head.
Revealing mistake: When we see the video of Eric being sick, it is very clear that the sick doesn't come from his mouth. (00:21:20)
Revealing mistake: When we see the clip of the kid on the plane from Bangkok to Detroit, the clip of the air-hostess turning around is the same one used twice. (00:13:40)
Revealing mistake: During the pukeathon, it is very clear that the vomit is coming from pipes attached to the actors. (01:09:15)
Revealing mistake: When Geek House gate crashes Beta House near the start and Eric is sick over the girl, watch in the Geek's glasses and you will see a light screen reflected. (00:19:00)
