I’ve had this happen a few times, but I don’t know if it is more common or less common.
When I go to a bar for a drink on say a Friday night I usually go with friends. I’ll head to the bathroom and sometimes the bar will be crowded so I’ll have to slip through a group of people. Several times I’ll get rubbed or caressed by women. Sometimes on the groin, sometimes on the chest or shoulders. It’s not wanted nor am I signaling I want to be touched, just saying excuse me and going past.
It bothers me every time.
Make no mistake, it's intended only to give them the upper hand while doing absolutely nothing to earn respect. Call 'em on it, and don't let them damage your self-respect. There are worthwhile girls out there, probably conservative, and they're the only ones worth giving yourself to.