There's a girl I (and rather dangerously my girlfriend) play badminton with. She's French. She's real pretty. She kind of curtsies when she bends down to pick up the shuttlecock. She seems very nice and an ACTUAL person, not just a hot lump of flesh.
But I spend most games as her partner playing (or rather not playing) behind her whilst being totally mesmerised by her rear.
Its a purely physical thing and poses no significant threat to my ever loving long term relationship, but it has reactivated those old teenage hormonal feelings - long since thought lost - that revolve around feeling awkward in front of 'a girl', like trying not to sound like a dork everytime I open my mouth or not letting her seeing me mouthing "I'm. In. Love. With. Your. Arse."
So, have you ever fancied anyone purely for a body part?