girl math

Meanings

1. Logically and mathematically dubious reasoning said to be used by women to justify expensive purchases, which inevitably concludes that the purchase in question is "basically free" or even makes a profit.
2. A form of (possibly fallacious) logic specifically used by girls or women.

Etymology

Coined by the New Zealand radio show Fletch, Vaughan & Hayley, whose segment "Girl Math" went viral on TikTok in August 2023. The segment features a caller who has made a large purchase, and the producers work together to use girl math to "prove" that the caller has actually made a bargain.