caca burp Share definition Flag A foul, sulphric, egg smelling burp produced by a vile person. usually produced from shit back up. Also called the backwards fart. Rare condition "Dude it smells like egg did you just caca burp?" caca burp by biddup March 30, 2010 0 0 Get merch Get the caca burp mug. Buy Now — $32.95 See more merch