A friend was riding the streets at dusk on his BMX a while back when a cop pulls him over and says "It's getting dark out. Does your mom know you're riding at night?" This guy's easily 20 years old and studying at the university, so he asks the cop "You DO realize that adults ride bikes too, right?" Officer didn't know how to respond and apologetically let him go. Funniest bike story I've heard in a while. I just wish adults riding bikes didn't carry an unusual stigma.