Terms for subject General containing know on which side bread is buttered

English	Russian
he knows on which side the bread is buttered	он знает, где раки зимуют
know on which side bread is buttered	знать свою выгоду
know on which side bread is buttered	быть у себя на уме
know on which side bread is buttered	быть себе на уме
know on which side bread is buttered	губа не дура
know on which side bread is buttered	губа не дура, знает, что сладко
know which side one's bread is buttered on	губа не дура (triumfov)
know which side one's bread is buttered on	знать свою выгоду (Interex)