crank the handle

crank one's hog

To masturbate by stimulating one's penis.

crank out

To produce in large volumes mechanically or as if by machine.

crank up

To muster up the mental energy to do something.

fly off the handle

To become very angry or enraged; to throw a fit or go crazy.

handle oneself

to behave

handle with kid gloves

To treat (a person or a subject) very delicately or carefully, especially so as not to cause offense or controversy.

have a handle on

To understand or grasp.