אנגלית ⇄ רוסית +

sit on one's backside מתח
כלל.	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
כלל.	ничего не делать (Дмитрий_Р)