I can't stand that cock-knocker. He's always causing trouble.

He called him a cock knocker.

He used a nigger knocker to knock on the door.

The knocker ups used to wake people up in the morning.

The knocker-ups used to wake people up in the morning.

Knocker-uppers were people who used long sticks to tap on windows to wake up workers in the morning.

The pork-knocker spent months searching for gold in the remote jungle.

The pork knocker is a legendary figure in Guyanese folklore.

The new restaurant is up to the knocker.

That was a slobber-knocker of a wrestling match!