cuntchin Share definition Flag When a womans cunt is so fat it sags, and forms like a cuntchin. Hince: cunt+chin= cuntchin "DUDE! her pussy was so floppy from her cuntchin, I had to hold the lips back to get it in." cuntchin by Mrs. JCC0312 January 18, 2008 0 0 Get merch Get the cuntchin mug. Buy Now — $32.95 See more merch