When I'm trying to impress someone or belong in a group, I become this overly chatty, overly excited, overly much of a d**kwad. It gets really annoying after a while.
See the thing is now, I'm much better at realizing when it happens. I feel the need to constantly try and make jokes and make people feel at ease and accept me, but for most, it comes off as too much. So I do my best to curb stomp that behavior before it gets out of hand.
And although I hate that behavior, I totally get it when other people do crazy things to secure the affections of others.