Out of curiosity (and boredom), I looked up some online tests to determine my "true" age. The first one told me I was 42, the next one said I was 17, and the last one, a mere 6 months old.
I feel 50 some days. I also feel about 15 at the same time. Maybe the 42 & 17 results weren't so far off from the truth. I'd like to think I'm more sophisticated than a 6 month old though.

Really young kids give me weird looks, like they know I'm different. It's unnerving, they just... stare.
I get along really well with my 11 and 13 year old cousins and often go to their house just to hang out.
Most people that I've met around my age are all about drinking, parties, sex, and drugs, so I struggle to find common interests with them.
I really enjoy my time at the yearly euchre tournament at my gramma's church, where I'm the youngest person and most of the rest are 20+ years older.
My paradoxical feelings towards my age have plagued me all my life as it seems I don't really fit in anywhere.

I can associate with your feelings. When I was 15 one of my best friends was 40. I also sometimes feel 60 and 8 at the same time.
Little kids love me but, get past the age of 11 and it's just like I'm in JHS again! They make fun of the way I talk and give me weird looks. I don't get it.