English Noun comedy breasts pl (plural only) A mould of naked breasts designed to be worn for comic effect. 2005, Paul Carter, Don't Tell Mum I Work on the Rigs, Crows Nest: Allen and Unwin, page 148:Perhaps some sort of name tag is in order, or even a good pair of Kevlar comedy breasts.Wikiwand - on Seamless Wikipedia browsing. On steroids.