pushover
Something easy to accomplish or overcome.
For Howard steering a boat is a pushover as he was raised on a tropical island.
A person easily seduced.
It is rumored that she is a pushover when she has a bit to drink.
when push comes to shove
A time when a touchy situation becomes actively hostile or a quarrel turns into a fight.
Can we count on the boss' goodwill, when push comes to shove?
Push has become shove for our finances.