Revealing mistake: When Calvin was telling Nicky what Greg told him Charles was doing to Jesse (sexually abusing), the lit cigarette that Nicky was holding in his mouth touched Calvin's teeth and ashes flew (for real!). The actors playing Calvin and Nicky knew what happened but did not immediately stop - they stayed in character. It was obvious this scene was "cut." When the camera returned to filming, Calvin was standing a few feet away from Nicky and the cigarette was gone. (00:30:35)
Revealing mistake: The cement block section of the house by the front door that Greg was painting "changed" to a flat board for a short time and then went back to the blocks. (01:05:28)