When your woman menstruates onto another surface, such as a towel, and then you cum on that surface afterwords.
by Reel July 4, 2013
dammnnn she smells like fisshh, i swore i smelt the ocean, dayyuummm she smelt like cheese... fish sex
by fbgnkhfgffv August 3, 2011
When a woman or man has the inability to perform the act of fucking the shit outta their partner while on top. All they do is flop around in the vagina or on the cock like a fish on dry land!
Bill: Wow John, I had this bitch over the other night that couldn't rid the cock too well!
John: U mean to tell me u fucked a sex fish?!
John: U mean to tell me u fucked a sex fish?!
by 123123gofuckurself1 February 3, 2010