Pegging is when a woman wears a strap-on dildo and anally penetrates a man. So many women are into this sex act -- BUT NOT ME!
I don't judge partners who do this. Do what makes you happy. Heaps of heterosexual couples get right off on it.
But its not something I could ever bring myself to do. Various guys have asked me to peg them over the years...but the answer is always -- NO.