I'd love a replaceable arse. You could wolf down a vindaloo and when the inevitable happens simply lip in to a spare for a couple of days.
Replaceable, interchangeable body parts would be a major boon and a massive earner for some clever bastard.
Post-coital ball ache? Screw another set on.
Bastard headache? Whack a clone of Steven Hawking's in temporarily.
Unpleasant sticky out navel? Get Kylie's.
Tits too small for tonight's date? Jordan's are on the shelf in the shed.
Tit's too big for tonight's action? [CENSORED'S] are sitting on the dressing table.
Etc.
