I mentioned before that I had my own theory regarding Gai Yuuki, and episode 11 was the source of that theory; basically, his entire bad boy persona is an act, none of it is genuine or real at all. He commits to it because like Raita this is his notion of masculinity, hence the aggressive and belligerent behavior on his part. This doesn't excuse the things he does, it merely puts it all in a context that I can deal with.
Personally though, I liked the ramen cup episode. For me, it was the good kind of ridiculous wacky.