положить деньги в общий котёл(A kitty is an amount of money gathered from several people, which is meant to be spent on things that these people will share or use together.: You haven't put any money in the kitty for three weeksu_horn)
положить деньги в "общак"(A kitty is an amount of money gathered from several people, which is meant to be spent on things that these people will share or use together.: You haven't put any money in the kitty for three weeksu_horn)