two gay men having anal sex with one another during the same sexual encounter, in which they both take turns being 'top' and 'bottom' with eachother, before cumming.

this is not to be confused with being 'versitile', because versitile men can top or bottom depending on their mood. if they do both in the same night, with the same partner, and the partner is doing the same with him, that is a flip flop.
"i flip flopped with that guy for hours, until we both came on eachother! i love flip flop sex"
by peopie July 7, 2008
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A pair of flip flops a girl would wear when she is turned on and ready for a night of sex
OMFG, leah is going to fuck glen in the parking lot of Newbury comics tonight, she got her sex flops on
by Shaelyn hater June 26, 2021
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