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

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Top Definition
literally "unterseeboot" or German for "Under water boat"
OK, It's a German submarine.
by IrishRepublicanArmy December 21, 2003

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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 29, 2005

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a submarine used in world war one and two
"omg the uboat is coming"
by Taylor Hewitt October 26, 2004

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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 27, 2011

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to go smoke some cigs
person A: "hey man, you wanna go Uboat?"
person B: "sure dude, i need a doog something fierce"
by sauve8392 June 12, 2009

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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 07, 2008

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