get blood out of a stone

blood and guts

Gore; gruesome images.

blood in the water

In a competitive situation, the exhibition of apparent weakness or vulnerability by one party, especially when this leads to a feeling of vulnerability or greater pressure to perform on the part of the weak party, or enhanced expectation of victory by the others.

blood is thicker than water

Family relations and loyalties are stronger than relationships with people who are not family members.

blood, sweat and tears

A person's determination and hard work.

can't get enough

Greatly enjoys; likes a lot.

carved in stone

Unchangeable.

cast the first stone

To act self-righteously in accusing another person, believing oneself to be blameless.

could not get elected dogcatcher

Said of someone, particularly a politician, who is extremely unpopular.