liquid laughter Share definition Flag Sick, vomit, shouting soup, singing the rainbow, spew, upchuck, driving the porcalain bus etc. "saw Sadie t'other night. Liquid laughter all the way to the bussy!" liquid laughter by Adele Smudge April 18, 2005 0 0 Get merch Get the liquid laughter mug. Buy Now — $32.95 See more merch