Sea Sharp 

Buttering someone's ass with a dull knife and sea salt before performing anal sex.

Rod love to Sea Sharp before gargling with orange soda and pop rocks.

Sea Sharp by dingus_brody August 15, 2011

Sea sharpening 

The act of having sex with a flaccid penis and it only getting hard when it's in the vagina, surrounded by vaginal fluid.

Person 1: "Oh man, I had a few too many drinks last night before taking that girl home."

Person 2: "I take it sex was out of the question then."

Person 1: "Normally, it would be. But she really wanted to do it so I just went along with it and started sea sharpening."

Sea sharpening by TimmaDoo May 8, 2020