Cootermuffin Share definition Flag A vagina that has been beaten so severely from sexual activity it has swollen up resembling a muffin 1. Do you see her cooch?Yeah I gave her a Cootermuffin last night. :) Cootermuffin by Jacc-C-nimble January 22, 2010 0 0 Get merch Get the Cootermuffin mug. Buy Now — $32.95 See more merch