Lexi Belle is a cute, innocent looking schoolgirl, but looks can be very deceiving. Lexi actually has a deal with her professor - she sucks his cock and he gives her a good grade. But, today Lexi's regular teacher is out and the substitute has heard all about their deal and wants in on the action. The new teacher has Lexi on her knees sucking his cock in no time. She's such a slut though so Lexi really doesn't mind, especially when he puts her up on his dick and sticks that b...