Mama Cass Share definition Flag A woman who will take care of you and all your friends when you're drunk. Thank goodness Mama Cass was there with us last night or I would have stayed in that ditch and you would have suffocated on your tiquilla and chicken taco barf. Mama Cass by ckredhead April 10, 2010 0 0 Get merch Get the Mama Cass mug. Buy Now — $32.95 See more merch