To touch oneself/another person in the pants.
To rub your hand on your or someone else's private parts.
To pinch another on the ass.
To give someone a hand job in a public place.
Jonny's a pants toucher, he always grabs his crotch.
That Jonny is a pants toucher, everytime he says hello to me, he grabs my ass.
1. A phrase used to concede a point, typically one of no-contest, such as pointing out an obvious correction.
This term is not to be confused with either the words touché or salesman.