A play on the traditional Red Lobster seafood dish, the "Fishermans Platter," it occurs when a man takes his used, post-coitus condom and smacks his partner across the face with it, essentially "splattering" his ejaculatory fluids all over said partners face.
While she’s riding you cowgirl, you reach around with a hook shaped index finger, briskly insert it into her rectum and enjoy as she starts to flop around like a fish on a line.
Rachel started on with the dirty talklast night so when she closed her eyes I did the old fisherman’s hook. She was flopping like a trout on a 20 pound line.
When you’ve still got half a pint left but your mate offers you a drink and you don’t want to miss out, so you get a half pint with which to top up the glass. A common scenario since the decline of the fishing industry, so fishermen sit at a ‘spoons nursing a pint instead of fishing.
Ray: Want a pint mate?
Hank: Still got half, I’ll take a fisherman’s half