Continuity mistake: When Peter catches up to Brian in the golf cart at the rehab facility, Brian is seen wearing a track suit with a headband and holding hand weights. Peter convinces him to go mess with the pregnant teens across the lake and in the row boat over Brian is still wearing the tracksuit and headband. However, when we see them enter a room where the pregnant teens are he has obviously taken off the tracksuit and headband and is just seen wearing his dog collar.Tobin OReilly
Continuity mistake: When Brian is giving his speech at the end, it shows two policemen. The one on the left has a brown drink and the one on the right has a yellow drink. But in the next shot, the one on the right has a yellow drink and the one on the left has a clear drink. (00:21:05)Amy Dobbins
Other mistake: During the scene at the rehab clinic when Brian is jogging, Peter asks if he wants to go "mess with the pregnant teens across the lake." Brian says no because "Group therapy, two o'clock." However, the sky looks as if the sun is about to rise or just set. The time cannot be anywhere close to 2:00, neither AM nor PM.