Finding out the hard way

"Joanne, strip for Bobby" Sarah said to me, I felt odd as I started to raise and then walking over to Bobby I slowly removed my top and bra and gyrated over his lap lowering until I was close to sitting on his crotch and raising again to push my ample ass towards his face. "Steve, treat Joanne like an adult stripper for the rest of the night" Sarah said to Steve, who started searching through his wallet and placing all his money in my g-string, which was now the only item of clothing I wore. "Zack, go home and study, I have no idea what homework we had for science but I want you to really work hard at getting an A" Sarah laughed