A person who sucks (ding ding) and gets ejaculate in there gob/mouth. If you kiss someone with "cumbreath" and havn't recently recieved a heady from them, BE WORRIED!
That chick at the bar i was just talking to had "cumbreath" i think i will go back and buy her a drink!
by Crozo January 23, 2006
When a girl gives you a blowjob, and you bust too big of a load, causing her to choke and cough. usually lots of swears will be used during this, like the swear god of Madagascar, Thunderfuck.
A mad hot blondie is blowin ya, and you cream a huge one, filling her throat. She gags, calls you lots of insults, and you smile, and reply "she's a cumbreathing thunderfuck" to the tune of "she's a very kinky girl"
by Bam Spazzy December 08, 2009