As someone else mentioned there, what the fuck every happened to sticks and stones? Remember when your parents used to tell you that? That life was tough and you needed to suck it up, buttercup. Yes, it's 'off-colour' and distasteful, but there's also no reason to make a mountain out of a molehill. Just because the guy said something in bad form you'd think he was actually out advocating for rape. There are myriad reasons we have black/dark/gallows humour. It helps us cope with the pressures of life.
While I agree that people should always be more aware and considerate where possible, I also don't want to live in some Orwellian state where something like this constitutes thought-crime and you're shipped off to the "re-education centers" for thinking it. Ever read about people that got sent to these things in Russia and China? Not pleasant. No where is it written that you get to go through life without being offended.