• like death warmed up

• I would like to be a fly on the wall

• cock of the walk

• backs to the wall

• worn-out

• have one's back to the wall

• woe is me

• at close quarters

• send him up the wall

• throw out the baby with the bathwater

• as warm as toast

• come hell or high water

• blood is thicker than water

• tread water

• in hot water

• fish in troubled waters

• be like water off a duck's back

• walk it

• walk out on him

• walk all over him

• carry the war into the enemy's camp

• heart-warming

• hold water

• a walk of life

• water under the bridge

• go a long way towards it

• keep one's head above water

• worn to a shadow

• go to the wall

• warm the cockles of the heart

• swollen-headed