When my son was about 4 (he's 18 now) we were in a Blockbuster video store when he went behind the counter and touched the sales girl. When I say 'touched' I mean he put his hand up inside her shorts. She was about 19 years old and was very attractive. Somehow that boy of mine has always gravitated toward any pretty girl. When his hand went up her shorts leg, she gave a little scream but then started laughing about it. She then said to him " did your daddy teach you to do that?" This caused me to blush (and no, I did not teach him that) and we all had a good laugh over his innocent transgression.
When my son was about 5 or 6 we had him enrolled in skating lessons. One class I was standing at the side of the rink watching him skate to his instructor when he fell just as he reached her. She was wearing a pair of track/sweat pants that apparently did not have their draw string tied up. He fell against her with his arms around her thighs and he slid down her legs and pulled her pants down at the same time. My view from the back had a great view of the metallic silver colored thong she was wearing. The following week, and for the rest of the sessions, she wore jeans that could obviously not be accidentally pulled down.
Hope you enjoyed reading this story, cheers, smallG