Watch Bang That Ass for Free: How to Stream the Movie Online at 123Movies. . Michael Brandon brings you his latest and greatest in an all-out sex-fest, Bang That Ass! The title says it all. The party starts off in the backyard with the boys getting a chance to see each other with clothes on. Watch carefully because the rest of the movie no one wears anything. Minutes in, the action starts and the boys are banging in every room. Every hole gets filled!