A portmanteau of "slut" and "thermometer" that can be used to indicate the unofficial transition from late Winter to early Spring by the visual indicator of attention seeking women immediately going from wearing full pants to short shorts or miniskirts within the span of two days.
The slutometer has indicated that Spring is declared, because I saw nothing but women's ass cheeks hanging out at Wal-Mart today.
by dressingtothe9s February 25, 2025