The term "wee-wee" is informal slang used to refer to urination or urine. There are several synonyms for "wee-wee," such as "pee," "piddle," "tinkle," and "urinate." Some people use childish terms like "pee-pee" or "wee," while others prefer to use more grown-up alternatives like "urination" or "urinate." Similarly, some people may substitute "wee-wee" with more vulgar or explicit language, such as "piss," "urine," or "taking a leak." Ultimately, the choice of synonym for "wee-wee" is a matter of personal preference and the context in which the term is used.