pratfall
From Longman Dictionary of Contemporary Englishpratfallprat‧fall /ˈprætfɔːl $ -fɒːl/ noun [countable] 1 MISTAKEan embarrassing accident or mistake another one of the vice-president’s pratfalls2 an act of falling down, especially when this is funny or embarrassingExamples from the Corpuspratfall• You could have knocked us over with a feather when we saw her doing Lucystyle pratfalls and found ourselves laughing.• Even if she had the most plausible answers, there still would be folks wishing Clinton would continue to take political pratfalls.• And I have a spinal problem from taking pratfalls for 50 years.Origin pratfall (1900-2000) prat “buttocks” ((16-20 centuries)) + fall