Okay. This is shamelss.... BUT. If you want to get OUT of any of these things that he is asking you...
... take a laxative about 6 hours before sex. Ahem.
... give a REALLY bad blow job, and then when you swallow, if you have the urge to throw up... do it.
For the shaving... don't have any suggestions... you just may have to do this one... but don't repeat. A few nights later, ask him to go down on you. He'll know what it feels like to encounter stubble.
