U-bend U-boat

A turd that is submerged in the U-bend of the toilet like the german submarines (U-boats) used to hide beneath the surface of the sea. 9 out of 10 U-bend U-boats are unflushable in the average toilet.

For fucks sake, that U-bend U-boat just won't flush! Pass me the bog brush Dave, it turd bustin' time!

by MSN NINJA April 19, 2009

buck a u-boat

To preform a u-turn in a car/truck/van very poorly. A half handbrake turn, a 3 or more point turn or to hit something while turning around.

"I just gotta buck a u-boat over there and we're good."

"That was brutal, way to buck a u-boat buddy."

by StonedPimpSO February 25, 2009

Japanese U-boat captain

When you go down on your girl for so long, that your glasses get fogged up.

I went down on Marci for 54 minutes last night and I looked like a Japanese U-boat captain

by jcracky April 23, 2013

u-boat

A u-boat is someone who can have an invisible disability and go undetected for years, like a u-boat, or an underwater boat.

So in middle-age, I've been diagnosed with autism. While it explains a lot, I feel like a u-boat.

by Siouxsie Supertramp November 20, 2023

brown u-boat

A poo submarine

All aboard The Brown U-boat

by Scab Pwicker February 12, 2018