полностью провалиться(if a plan or situation blows up in your face, it has a bad effect on you instead of the result you expected: The government's attempts at reform have blown up in its face, with demonstrations taking place all over the country)
придурок(foolish person. Someone of limited intelligence Still used in suburbs of Liverpool as a derogatory term; syn.: spaz, dickhead: Eh mate... you fuckin blert?)