Ben was hooking up with a lot of girls it looked like he was running a brothel in his room so Gregory told him he needed to start debrothelizing before he caught an STD.
Best teacher ever, he'll delete you out into the corner of your class because you complimented his amazing cut.
He is basically a light reflector when the sun is out. If you see a beam of light in a hallway with no windows you can tell he is coming. RUN!
Also if you talk he'll delete your virginity as he did to me