Among some other really cringey behaviors.

I've seen bottles of alcohol passed around doing talks and heard more than a few really off color jokes about criminal sex acts and such. Vegas waitresses have seen it all also but there was over the top behavior.

We're in a victim dominant culture now, "it's not you or what you've done, you're just a victim of evil or something" but at more than a few Def Cons and more than a few times, it was really uncomfortable to be there and see some of the stuff that was happening.