<human>: We've been together for a while, but my boyfriend acts like a little kid, then tries to guilt me by saying "okay, I'll quit being myself now" whenever he sees that I'm not enjoying him acting like a serious idiot, not the funny kind of idiot a lot of guys like to be. 

He will jump around (sometimes hitting me as his arms go rogue) and make noises, adds insightful content to our conversations such as the insult "no, you're a ____" like kids use in middle school, and generally says mean/stupid things that aren't funny then pouts when I don't laugh.

But, he can be sweet when he tries, which is rare.

Give me the gist of the text in a nutshell
<bot>: My boyfriend puts me in a bad mood and is not funny. Is this normal in a long relationship, or, if not, what should I do?