Urination is the process by which urine is disposed from the body through the urethra, in humanoids as well as certain other creatures. To pee or to "take a leak" are slangs originating from Earth referring to the act of urination. In 2063, Zefram Cochrane conspired to escape the uncomfortable circumstances by stating that he had to take a leak as a ruse. Confused, Geordi La Forge stated that he couldn't detect a leak with his ocular implants. Cochrane explained that to "take a leak" meant to eliminate or pee. (Star Trek: First Contact)