It should come as no shock to anyone to discover that Shia LaBeouf is one of those. You know what I mean...that kind of guy. The kind who needs very desperately to prove to the other males around him that he is tougher/cooler/harder than them. All the time. Unrelentingly. Until you can't stand being around him another second.
People think this behavior is about impressing women...maybe sometimes. But mostly it's for the other guys. Shia probably gets all tender and cute when he's alone with a woman. Or maybe he likes them to slap him around too...he could just be a flat-out freak.