Well in some ways this is not the nicest thing I ever did, however I did do it for someone I had never met with, and whom I was in no way interested in shagging, it was a woman around the age of my mother or something like that.
I was on my bicycle on my way home from school when I noticed that my bicycle was performing incredibly poorly. I stopped and found out that my back wheel was loose which caused it to wobble incredibly while I was riding on it. It also caused the chain to be loose and overall increased friction created by the whole system, meaning lots of the energy I put into it was wasted.
Anyway, I got back on my bike and decided I'd rather struggle with riding it all the way home instead of walking with it besides me. So while I was riding my bicycle home there was a woman riding hers in front of me. She had her gloves in the basket behind her and the wind was blowing a fair bit. Naturally the wind picked up one of the gloves and sent it whirling to the other side of the road, which was fairly busy. I see this and decide to stop, wait till the road was clear, ride to the other side of the road, pick up the glove, wait for a clear again, and then ride back to the other side again. At this point the woman was about three traffic light ahead of me. In spite of my bicycle being in the state it is, I decide to catch up to the woman, toiling to reach her. A couple of light turned red as I reached them, forcing me to stop and wait, increasing the distance between the woman and I. In the end I catch up to her, and in between gasps I manage to utter the sentence "Excuse me, but I believe this is yours.", or what amounts to that in Danish. I then give her the glove, she takes it, looking confused, and rides off. Didn't even say thankyou.