Young masculine homosexual males who exhibit no effeminate characteristics or interests and make a point of going on about how 'normal' they are. Previously they would have refered to themselves as straight acting but that's so 2005. Gaybros have no gay friends because they can't relate to other gay people. This is something else they insist on telling everyone.
1. "I'm not saying all gaybros are self loathing, but a lot of self-loathers are gaybros."
2. Gaybros would rather watch the Superbowl than go to IKEA.