I learned to embrace my dorkiness in a way that makes it look cute. I've noticed that body type has a big role to play in whether or not that works, though. My ex-bf tried to be cutesey, but at 6'4" and over 200 lbs, it only ever came off as awkward to me and my other friends. I'm 5'1" and only weigh 120. Another friend I have is a beanpole, and can be cutesey, especially when he's drunk(which his gf LOVES, lol). Another friend is a burly guy, and has the drunk rocker type persona, which also makes everyone laugh(with him, not AT him).
Took me a while to find my persona. It does take a lot of patience.
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"I'm sorry, I seem to have a tin ear for other people's feelings..." -Naoto Shirogane