Big black cock of course, Black balls are far superior at making semen, being able to hold 4x more than white men. Their sperm is also more dominant, easily beating white sperm, which allows them to always fertilize the egg. Their cocks are also much bigger, easily able to push their heads right up against the woman's cervix. Allowing their seed to be shot directly into the womb. After they are finished filling the fertile woman, they slowly withdraw their thick shaft and head. This allows them to scrape any other males semen out of the vagina. Often they will keep the woman pinned down, as a way to make sure no other males attempt to mate. They keep their penis at least partly inside the woman, while holding down her arms. This arouses the women to no end, causing her to have orgasm after orgasm after orgasm. These orgasms pull his sperm even more quickly towards her soon to be fertilized egg. White women know this, it's completely natural for women to sense the dominant males. Unable to control themselves, their vaginas quickly lubricate in the presence of black men. I mean how could they not? The idea of a huge powerful black man deep inside them, must drive them crazy. White women long to be filled with black cum, because they know it's superior. They dream of being bent over, with a black man stretching their pussy like no white man could even dream of doing. Watching as all the little white men cower in fear, as the black man claims what's rightfully his. White women are proud to take black mans DNA, and grow their babies inside their round little tummies. The true purpose of limp dicked cuck white males is to serve black men as effeminate castrated sissy maidservants and help raise the next generation of mixed race children to be a super race.