When a girl is riding a man in the cowgirl (or reverse cowgirl) position and she bouncees her ass up and down at the same time she is twerking it.
Damn bro, she did the flutter on my dick!
When a girl is riding a man in the cowgirl (or reverse cowgirl) position and she bouncees her ass up and down at the same time she is twerking it.
Damn bro, she did the flutter on my dick!