Unfortunately, the source for now of this information is the National Enquirer, so we can't be sure if it's legit, but I certainly hope so.
The story is that while at a club in Ottawa, Lady Gaga, among friends including Adam Lambert, was approached by a man and verbally assaulted. He told her that he thought she was a man, and asked if she was okay with going to hell because of everything she represented and the gay community that she supported. She told him that she didn't care, and if she went to hell, it'd be alright if she didn't have to see his face there. Go Gaga!
The man then went on to insult not only Gaga but Lambert, calling them both freaks, among other things. Lady Gaga became upset at this point, yelling that it was okay to insult her, but her friends while she is around. She then, supposedly, took the glass of wine she was drinking and poured it onto the man before leaving the club.
I feel bad for Gaga and Glambert if someone attacked them like this, but I'm proud to hear that she stood up for not only herself and Lambert, but gay people everywhere by not caring about what a bigot had to say.