Diddywop

To badly hurt someone by surprise.

A term used in the Mafia days for beating up an individual deserving of a lesson.

A term used to strike fear, pain, and sense into the subject victim.

"They paid the kid $100 to diddywop that guy, who beat his old lady, in that alley."

"I'm hanging up (the phone), I'm coming over there, and imma diddywop your ass!"