i always wondered if the curve actually gave more girthlike effects than what one's actual girth was. as hard as this will be to describe, hear me out. when a penis is curved upward, i would think that it would open (from top to bottom, not sides) the vagina even further than a straight one due to the fact that the top of the penis is higher than the rest of the shaft (due to the head curving upward). i can't think of a better way to explain it and i'd put a diagram up if i new how. maybe someone understands what i'm saying and will chime in if some don't.