'you can't have your cake and eat it
at least not without perforated buttocks'
was the original saying. They shortenend it in the 70's.
(
lordsaccharine b3taing is well retro mate,
Tue 27 May 2008, 11:00,
archived)
"...unless you're a greedy baker"
(
Aphex The Mink Snackless,
Tue 27 May 2008, 11:03,
archived)