Kerplackerd 

1. To hold your body as flat as you can against a flat surface.

2. Being slung against a flat surface with centrifugal or gravitational force.

3 Contact with a flat vertical surface to appear as if you are laying on it... in any position... as flat as possible.

I was kerplackerd against the wall hoping they wouldn't see me.

Look at all those people spinning on that amusement ride kerplackered against the wall.

Kerplackerd by Existance-0 December 24, 2020

kerplinkerdinker 

Any amazing technique whose name you can't pronounce easily; an astounding skill or ability that someone has.

Derives from the English-language dub of the anime "Rurouni Kenshin", in which Lynn Fischer was prone to (understandably) flubbing the pronunciation of Kenshin's sword techniques.

Then he dove at his enemy, and unleashed the....kerplinkerdinker!

kerplinkerdinker by Matthew May 10, 2004