When it comes down to it, who among us doesn't love a sexy man butt? Sure, bulging biceps are a turn-on for some, and yes, washboard abs will probably never go out of style - but a gorgeous man bum? You can't beat it. But t why are we attracted to man butts? If a woman has narrow hips and a broad waist, it means she isn't pregnant and she's likely to survive childbirth.