llelo Share definition Flag Spanish slang for cocaine. Often misspelled as "yayo" or "yeyo" ("yay" or "yey" for short). Dealer: Yo I just picked up like 6 gs of white. Buyer: Nice, I'd kill for some llelo. llelo by Janyl February 13, 2007 0 0 Get merch Get the llelo mug. Buy Now — $32.95 See more merch