skateboarders being referred to as kids when they clearly aren't. it's not just the public either. most skateboarders are guilty of this.
the general public looks at skateboarding as something that's only for kids. if someone over 30 is skateboarding, people ask in disbelief "he/she is in their 30s and riding a skateboard? omg."
I don't know why this doesn't seem to hold true for snowboarding, surfing, skiing, jet skiing, water skiing, hang gliding, skim boarding, body boarding, boogie boarding, kayaking, white water rafting, bicycling, etc. and a lot of skateboarders have basically picked up this belief, I guess.