A Case for Lesbian Butt?

When I was a teenager, guys used to claim they could tell if a girl was "experienced" from the shape of her butt. I'd not be so crass as to claim any direct knowledge of this, but could it not be postulated that certian activities tend to "perk up" certain muscles, muscles which could not be exercised without heterosexual "activities". Someone who even subconciously sees similarities among the butts of women she ultimately feels affection for might learn to associate this similarity with sexual attractiveness.

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Lesbians exercise diferent butt muscles, ultimatly leading to a different butt shape, ultimately leading womwn attracted to lesbians to be attracted to that shape.