cat piss

bell the cat

To undertake a dangerous action in the service of a group.

cat and dog life

An unhappy married life marked by arguments and disagreements.

cat got someone's tongue

Why is someone not saying anything?

cat in the meal-tub

Something concealed; a hidden danger.

cat that ate the canary

A person who appears self-satisfied or smug, especially while concealing something mischievous, prohibited, or private.

cool cat

A person who performs or appreciates jazz, especially one whose style of speech and movement is relaxed and rhythmic.

dead cat bounce

A temporary recovery in the price of a financial instrument which has fallen rapidly and is expected to fall further in the long run.

different breed of cat

Something entirely different; a whole other thing or matter.