i lose mine, but i want to...i get off on anal anyways. but the reason most men lose their erection during anal intercourse is because the bottom focuses on what's going on with their ass, and are less concerned about what their dick is doing. it's not a matter of being turned on or not, it's a matter of conentration. if your ass is being fucked, you focus on it, if you're fucking with your ... More @Wikipedia
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