Mind you, I run with a fairly politically-charged crowd -- pro-feminist, pro-gay, firmly anti-racist and anti-sexist -- the kind of people who wouldn't think twice of throwing you out of a bar, physically if necessary, for saying something legitimately creepy or offensive. But still I can't imagine that kind of a joke getting anything more than smirk, or a roll of the eyes out here.
Really now, some people need to get a grip, and a sense of perspective.
How is this type of reaction any better than saying something anti-feminist, anti-gay, racist or sexist? Sorry but people need to get over the idea that they have the right not to be offended. If you're offended then you can say "I'm offended", you can leave, you can ask the person to leave, you can offer a rebuttal, etc. But physically man-handling someone or reacting in a way that suggests that they have someone violated your "right not to be offended" is wrong because you have/should have no such right.
If you're at a bar and you're ruining the vibe in any way, you need to get out. If you don't leave when asked, you will be gently but firmly escorted to the door. It's just the way things work.
But again, this refers to bars and other private establishments. I wasn't talking about how things should be handled in society at large.