I'm a tall white guy with a 8 inch dick that curves downwards, not alot but enough to where you notice it. My girlfriend and I have been trying to have sex from behind but because of my downward curve it hasn't been extremely successful. After every thrust when I slide out it almost slips totally out and I have to be really careful not to let it do that. It doenst help that we both like the harder and longer thrusting motions, and with this position we have to take it really slow. Has anyone had this problem and how did you resolve it?