oppa clown Share definition Flag A korean man who dresses up as a clown in order to satisfy his fetish of being a sexually deviant clown to ladies around him. The oppa clown brought her home and seduced her by making animal balloons. oppa clown by bojy September 30, 2008 0 0 Get merch Get the oppa clown mug. Buy Now — $32.95 See more merch