As far as my behavior and intellect goes, I'm pretty mature, or so I'm told. I was once told that I have the intellect of someone who's around 30, and whenever I have to deal with rude or foolish people, my mom will often tell me that I "handled it maturely".
But when it comes to interests and hobbies... Well... that's another story entirely.
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My mom says that my interests are more suited to a 14 or 15 year old. My special interests revolve around films of all kinds - but all of my top favorites are either rated G or PG. I still have imaginary friends and I also sleep with a teddy bear every night.
Well, I don't sleep with teddy bears( don't think I did since I was a baby, anyway; found it very uncomfortable), but my girlfriend still may.