Embarrassing 2 year olds

I don’t know if all 2 year olds do this (probably not), but Sean has this habit of touching people out of nowhere. Sometimes it’s a pat on the leg, sometimes on the bottom, sometimes just a poke in the arm, then he walks away and doesn’t say anything to them, just smiles. I’ve tried to tell him that this is inappropriate behavior, but that doesn’t stop him. Well, today while at Jiffy Lube, Sean started touching the lady sitting next to me on the leg. She was wearing shorts, and he just rant his hand up and down her leg once. The lady looked at him and said “They’re hairy, huh?”… Indeed, her bare legs were hairy. I was so embarrassed.