enough to choke a horse

beat a dead horse

To persist or continue far beyond any purpose, interest or reason.

can't get enough

Greatly enjoys; likes a lot.

charley horse

A muscle cramp, usually a strong one, in the thigh, leg, arm, or core.

choke off

To get rid of; to cause to come to an end.

choke the chicken

To masturbate by stimulating one's penis.

close enough for government work

Adequate; acceptable as government work, imperfect but not worth the time nor effort of improving.

close the stable door after the horse has bolted

To attempt to prevent a problem that has already occurred; to design and implement a preventive mechanism that is too late (after the first failure instead of before).

crazy enough to work

Acknowledging that an idea, plan, or strategy seems foolish, implausible, or risky, yet might succeed precisely because of its unconventional or unexpected nature.