Continuity mistake: Ben caught his T-shirt in his right hand when the girl threw it to him in the swimming pool, but Ben is with his empty right hand in the pool. When Ben got out of the pool, he picked up his T-shirt. (00:32:18)
Continuity mistake: Ben overslept so grabbed a green T-shirt off his bed and got into the truck where his dad was waiting to drive to work. At work, Ben changed into his blue polo work shirt. When Ben was leaving work, he had a green/yellow/white checked short sleeve shirt over the green T-shirt, but he did not have the checked shirt when he went to work. (00:21:44 - 00:24:54)
Other mistake: The way the girl managed to remove Ben's underwear when they were standing in the swimming pool was unrealistic (too fast and without Ben moving enough). (00:31:28)