cumback Share definition Flag After a woman gives a man oral, she doesn't spit or swallow-- she proceeds to kiss the man and give him his cum back. "Dude after Stacy blew me, she gave me a cumback-- I didn't know it was that salty!" cumback by JuJuLaylayRiRi April 2, 2009 0 0 Get merch Get the cumback mug. Buy Now — $32.95 See more merch