gash guzzler Share definition Flag nickname for lesbian, likes gash, same as muff bumber rug muncher all them lot. guy one: she looks like a proper gash guzzler idiot: no i think she looks like a lesbian. gash guzzler by izzy shits December 23, 2008 0 0 Get merch Get the gash guzzler mug. Buy Now — $32.95 See more merch