That girl has failed her test for the first time. Being the nerdy girl that she is, she just cannot afford to get a C -. Her horny perverted professor decides to take advantage of his student. He makes her suck his dick. Then she gets down on all fours and gives him full control of sex. Then she rides his hard cock like a fucking cowgirl. You can tell she is no stranger to sex even though she looks like a total nerd.