When you are on a boat with an Intimate partner, and you engage in the act of anal sex then take the shit covered and cum filled condom and catch a trout with it, to then you reel it in and gut it and place the innards into your partners gaped hole.
ex.
1-"Dude i went fishing with the homeless lady that's always hanging around the 7/11 last weekend "
2-"You're a sick man, did you atleast get a rusty trombone out of it?"
1-"Nah dude but i convicted her to let me try the Tennessee trout bugger on her it was so fucking hot"
British origin, though what body of water isn't clear. Shrouded in mystery. Well- read. Frequent haunts seem to be bookstores with bistros, most notably Joseph-Beth Booksellers in Rookwood. Has been known to incite jealousy, arouse suspicion, inspire bitterness in his fellows.
He wrote on my wall and my BF is angry, what a Wily Sea Trout!
He's always harrassing the girls who work at Bronte, what a Wily!