thankfully i've never had issues with size.... personally, if the size of a man's dick is going to pose that much of an issue for me in general, then it's time for me to re-think how i approach sex and the people i have it with....
to me, i see different shapes and sizes as a means to get in to different areas of focus on a guy.... in turn, i would hope that the person i'm with is open to exploring as well.... taking my sexuality as a means of learning about different areas of pleasure rather than simply going through the motions and hoping for the best, i can generally find a means of mutual pleasure in my comfort zone with virtually every person i'm with.... the only inhibitor lies in the attitude, not in the activity.... and the best part: i get to leave the experience with some new tricks up my sleeve for the next willing participant....