Isn't it a splendid word?
Signifying those protuberances
which form a hump or
in common parlance arse, or rump.
But arse or rump, tends to lower the
tone of buttocks.
Buttocks:
See them sashy down the street
accompanied by swinging hips.
Goodness, gracious, what a treat.
Buttocks:
Apropos the female gender, unless
one's inclined to be a gender bender.
In such a case the merest glimpse of
a laddies rear, makes the gay chap
overjoyed there's buttocks.
Indeed I say, one could muse
for days and days on, Buttocks.
jerry hughes
http://www.poemhunter.com/poem/buttocks/