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Derived from the fact the urine (colloquially referred to as "piss") is generally warm from carrying human body heat.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: lukewarm Full definition →
Derived from the fact the urine (colloquially referred to as "piss") is generally warm from carrying human body heat.
Etymology from Wiktionary, CC BY-SA 4.0.