Terms for subject Idiomatic containing pineapple

English	Russian
know as much about as a pig about pineapples	как свинья в апельсинах (Yeldar Azanbayev)
know as much about as a pig about pineapples	не знать ни аза (Yeldar Azanbayev)
know as much about as a pig about pineapples	не разбираться в элементарных вещах (Yeldar Azanbayev)
know as much about as a pig about pineapples	быть круглым невеждой (Yeldar Azanbayev)