Top Definition
Licking the soles of your flip flops on your last day of holidays as a way to make yourself violently ill; ultimately with the aim of losing the pounds you've put on from lazing away while on leave.
"Have you seen Selma since she came back from Thailand? She's looking trim!"

"Yes, I heard she went on a flip flop diet."
by Moose eater July 13, 2009
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