дебил("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); долбоёб("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); умственно отсталый(ср. retard; "A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); идиот("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); имбецил("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); непонимайка("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); недогоняйка("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); невдупляйка("A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); тормоз(Mostly British.; "A person who is not only lacking in clue but is apparently unable or unwilling to acquire clue even when handed it on a plate in generous portions." – urbandictionary.com Vadim Rouminsky); ушлёпок(Taras); утырок(Taras)