Why do I find gay humor to be funny?

Some men are offended by anything gay or remotely gay. I'm not gay but find gay humor to be funny but if someone played a gay joke on me, like touched me even in a joking way in my private areas, I would find it uncomfortable. I just watched the bruno movie and found it so funny. Especially the scene with the asian guy and bruno when he put a chair in a slingshot and rammed himself against bruno.