if it's yellow let it mellow en · X
Etymology
A short version of "if it's yellow let it mellow, if it's brown flush it down".
Meanings
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In order to save water, do not flush the toilet every time you urinate.
Explanation: No! I did not have to follow the, “if it's yellow, let it mellow” rule—in fact, if I did follow that rule I would probably still be single.
2016, Bo Bennett, Logically Fallacious, →ISBN:He went on to explain: I'm not gonna waste like a gallon and a half of water that we're stealing from the Colorado River just cuz I took a pee, you know like, 'if it's yellow let it mellow,' you know, don't flush it.
2013, Laura Portwood-Stacer, Lifestyle Politics and Radical Activism, →ISBN, page 29:It's a tad gross that I haven't been able to flush, but if it's yellow, let it mellow ... and run like hell-o.
2011, Kirsty McKay, Undead, →ISBN: