a gong show
A wild, chaotic, ridiculous, and/or disastrous event. Sometimes written as "gongshow." From the 1976–1978 television show The Gong Show, an amateur talent contest in which judges would end particularly bad acts by striking a giant gong. Primarily heard in Canada. Did you go to that party last night? What a gong show! A: "How do you think you did on your exam?" B: "It was a total gong show. I'll be lucky if I even passed."