not sure if this was meant to be a joke, but its the main fucking reason why its NOT acceptable.
all the "who cares" about another dude seeing her tits, and fucking her, blah blah blah. im not saying a girl has to be a virgin, an angel, a fucking nun, but when your with a girl out of respect and courtesy the fucking and flashing of other dudes stops, PERIOD.
now maybe, if she was okay with him flashing his cock into other girls faces or stripping down and flexing his ass cheeks for beads, it would be another story, but EVERYONE in this thread, knows damn well she wouldnt think it was ok for him to do...