Instead of "Hi, wanna a dance?", I got "Hi, want me to rub your cock?".
It so threw me, that I replied "Uh... sure I'll have a 'private dance'".
Then she did something I've never had done before, she put her mouth on my crotch and somehow vibrated! It felt really good and the first two times she did I was sure she had a battery operated toy she was using. It was that amazing, it really didn't feel like it was coming from her mouth but it was. I've never had anyone do this to me before. Is it common?
This was done in a club that doesn't do extras, so both things were surprising to me.

