While it would not happen to me in all likelihood, I find the general lack of humour displayed in this case by the OP appalling.

However I am aware of the fact that many of my gender are incredibly offensive to women and that after a long week with many conferences and in all likelihood having to suffer many comments and jokes that really warrant a calling out the sensitivities are heightened.

Unfortunately calling a tasteless joke about a big dongle sexist draws attention away from the real offenders and validates the believes of die hard sexists that this is drama about nothing.

I'd rather have people concentrate on stopping things like http://geekfeminism.wikia.com/wiki/Flashbelt_slide_show instead of twitter shaming someone who made a joke among his friends, that was not thought for the ears of the OP.