By no means do I want to set preconceptions for differences in fellatio among the sexes, but my experience has shown that men are more willing and able to take on the size. It's more than an issue of men having bigger mouths and an idea of what feels good to another guy. Men haven't nearly the apprehension in taking one -- and in a strange way, I don't have to be as sensitive to his needs as opposed to hers. While coaxing her to just take it in her hand, the man's more prepared to swallow the fucker whole, get streaked with prejizz, and all that rot.