The art of shoving your wooden plank into her elegant transom and lathering her vessel with a coat of milky sweet varnish.
"I docked my dinghy bow first into her beautiful deep boat slip last night, nothing like a great night of boatsex, Jim"
by hydrostaticlubricator May 16, 2016
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the act of engaging in intercourse with a marine vessel
"I totally had boatsex with this sweet yacht last night."
by meowphine February 6, 2012
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BEWAR OF GAME OF THRONES SPOILERS BELOW!!!

A meme originating from reddit after Game of Thrones leaks suggested that two beloved characters would have incredible sex with each other in season 7 episode 7 of the series on some sort of marine vessel. When the same script leaks came to be true of preceding episodes, it became more clear that "#EPIC BOATSEX" (or "BOATCEST") was imminent. As of August 21, 2017, the world awaits for the official airing of the episode.
Guy 1: hey bro stop shipping Jon and Daenerys, she's his aunt that's incest

Guy 2: STFU you fookin kneeler, #EPIC BOATSEX is happening whether you like it or not!!
by Bland212 August 22, 2017
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