Hmmm... I have a few. When I was walking home one night after a *couple* of drinks a woman, probably mid 30's came up to me and asked me if she could plait my hair (I have hair down to the top of my bum). I accepted and she sat for about 5 minutes doing it.
Girls/Women are weird like that and I can say that this wasn't an isolated incident, I have about a 75% chance of being asked by a new girl I meet if they could plait me hair. I think it's the allure that I'm a guy with long hair, apparently it's in good condition too according to them although it feels gross to me on occasion.
"Parent's killed by ninjas, need money for karate lessons" - A homeless person's sign.
EDIT
internutt said:
"What's your shoe size ma'am?" Some random guy at the train station.
Oooooh you just reminded me. I was once working in a shop, had my back to the door and a bloke walked in and said 'alright luv' to me. I turned around, the look on his face was priceless.