I always preferred to say "It's not the size of the boat, but the motion on the ocean".
It's very strange. I certainly know that really for most women that size really just doesn't matter, within reason. But firmly knowing that does nothing to shake my enjoyment of this fantasy.
I know I'm far from the only one who would enjoy it though I'm not surprised at the lack of forthcoming responses from other males who agree. I figure what the hell, no need to hide (most) secrets among friends.