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to urinate(see also piss, whiz)
I was on the bus for so long, I had to take a leak when we got to our destination.
by Light Joker December 25, 2004
(Informal) to urinate, to piss, relieve oneself. (Crude. Use caution with the topic. Usually in reference to a male.) I gotta take a leak. Man, it felt so good to finally take a leak.
I gotta take a leak.
by Fearless Freddie July 17, 2014
In the author Kurt Vonnegut's novel, this phrase means: "To steal a mirror."
Truck driver- I gotta take a leak

Kilgore- Where I come from that means you are about to steal a mirror!
by punman March 12, 2009