Table Knock 

A-To give notice to another person by knocking with the knuckles upon a table top when frustrated with said person.

B-To mark one's territory when concerning a loved one, like a dog pissing on its front lawn.

C-To make one's presence felt.

I was at the bar with Ronelle and she started talking to these three guys at a table. So, as I walked past, I table knocked those mother fuckers. They all looked at me with so much fear and confusion in their eyes. Mainly confusion.

Table Knock by Virginia Mission October 16, 2009

Table knockers 

(n) a pepper so spicy that results in one pounding the table while it’s being consumed.

While eating hot wings 2 friends discussed the level of spicyness

“OMG dude, I got me a table knocker”

Or

“ this pepper it sure is a table knocker”
Or

“Let’s get us some table knockers”

Table knockers by Hydrasia August 15, 2018