Do I what? Take it up the ass? That's really a bit crude, but quite frankly, I'm not really offended like some girls would be.
I'll tell you what. You guess right, I might, just might let you do me in the butt, bub. But, wouldn't you rather sink your cock into a nice, tight, hot, wet pussy? After all, you do have a girlfriend!
So, grab your testicles in one hand and the base of your cock in the other and squeeze them for 15 seconds.