Continuity mistake: When Josh is asking his dad if the cops were hot, from the side he's leaning forwards with both elbows on his knees, then from the front he's more upright with one hand on his knee, arm bent out to the side. (00:09:45)
Continuity mistake: When Stu accosts Josh in the alleyway, he waves the cleaning receipt at him and then in a shot from behind, shoves it in his pocket with his right hand. Cut to the front, and his right arm is suddenly pointing straight at Josh. (00:23:15)