A tight pussy's natural wetness is in a world by itself. The feel of my lubed cock in an ass, whether my girlfriend's or my buddy's is different, but it can also feel awesome. If you're bi, you don't try to make comparisons. You just accept that each feels great — but differently from the other. Another factor may be that different nerve endings are involved. Anyway the bottom line is — simply enjoy!!!What do you mean by"vaginas completely envelope your penis?" and are you saying vaginas stimulate the whole penis better than anal?