The phrase "taking a leak" is a commonly used slang term for the act of urinating. While this phrase may be widely recognized and used, there are several options for synonyms that can be used as well. Some alternatives include "going to the bathroom", "using the restroom", "taking a piss", "relieving oneself", "emptying one's bladder", or simply "peeing". While these synonyms do not have the same colloquial feel as "taking a leak", they can be used in any setting without fear of offending anyone. At the end of the day, the choice of words used to discuss urination is up to personal preference and comfort level.