U-boat

literally "unterseeboot" or German for "Under water boat"

by IrishRepublicanArmy December 21, 2003

this is the name of drink, mostly use in poland. put short-drink (wet) of vodka into your glass of beer and drink it all in very short time

-o man. i'm so drunk! i've drink 5 u-boat's in 20min!

by qwertyswertly December 30, 2005

u-boat

by Taylor Hewitt October 26, 2004

Similar to the act of motor-boating, except your face is in her ass.

Your mom and I were watching the History Channel last night and we got heated and I ended up U-boating her ass!
Brbbbbbrrrrbbbbbbbrr....

by Thought Monkey July 8, 2010

When a man sneaks up on his girlfriend or wife while she is sleeping and puts it in her butt.

While Emma slept, Gary snuck under the covers and gave her the... u-boat.

by The Blodger October 28, 2011

A long and sturdy albeit plastic turd that bends in a U plugging the toilet when the moment off truth arrives.

Man I had to swab the deck after U-boat 7:17 left the dock.

by delmarskd! October 20, 2011

Large continuous dump shaped like a German WW2 submarine. Usually occurs the morning after a night of numerous beers followed by a curry

"Why were you taking so long in the bathroom?", "Jesus love take it easy, i just sunk a u-boat"

by Jimmy Somerville March 7, 2008