if it's yellow, let it mellow; if it's brown, flush it down

短语

词形变化

if it's yellow let it mellow; if it's brown flush it down

释义与例句

phr.
  1. 1.

    In order to save water, only flush the toilet after defecation, not after urination.

词源

Initially coined during one of the California droughts.

来源：wiktionary