An estimation of a females’s amount of past sexual partners, intended in a derogatory, judgmental, ignorant, and hypocritical manner.
Bro 2: Yo, you planning to have sex with Guadalupe, bro?
Bro 1: Yo, no way. She's had way too much gash mileage, bro.
Bro 1: Yo, no way. She's had way too much gash mileage, bro.
by dwaynetrobinson July 17, 2022
Get the gash mileagemug.