What's on your mug?

Something your family can’t do before they enter your room

*mother barges in bedroom whilst you’re in the middle of having sex* You:”Holy shit mum, every heard of knocking”

By elv14

Punching a Door until it opens

* Invention of Knocking *: "I'LL PUNCH YOUR DOOR UNTIL YOU OPEN!" Person: * Opens * Greetings!

By 7Macros

Something that occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.

Modern cars are prone to low-speed knocking

By Sir. B

Something parents will never do.

Mom:*breaks the door* Me: Ever heard of knocking?

By Kokichi 0um@

A word used to Describe a loud stereo system.

Man, that motherfucker is knocking.

By Onlyfuckedfromtheback