curb stomp

Short definition from Wiktionary

Verb

1. 1
   To stomp on someone's head, forcing it into a street curb (often while they are positioned with their teeth biting the curb).
2. 2
   To defeat an opponent overwhelmingly or effortlessly.

Noun

1. 1
   An act of curb stomping.
2. 2
   An extremely one-sided victory.