英语 ⇄ 俄语 +

sit on one's backside 强调
一般	сидеть на заднице (The worst thing that a company can do right now is go into hibernation, into duck-and-cover. If you just sit on your backside and wait for things to get better, they're not going to. Дмитрий_Р)
sit on someone's backside
一般	ничего не делать (Дмитрий_Р)