Someone who is mentally and physically usless, stupid, clumsy and generally a dumb ass or imbecile is know as a crash test dummy.
Look at will falling down the steps. God he is such a stupid ass crash test dummy.
by saharadryhumor January 15, 2015
During anal, stand on the edge of the bed with your penis head barely inserted into her ass. Then fall forward to the floor and the rest of it goes in. (best to make her wear a mouthpiece so her teeth don't get knocked out.)
Her face got bruised up when I ran the German Crash Test on her.
by Bob0008 October 18, 2007
Prison Slang - The individual that is required to perform illegal acts against the prison guards or authorities as required by the prison heirarchy.
Tony is going on a crash test dummy mission to punish that guard. He's going to start a fight with him.
by EmichG August 30, 2007
Nineties folk rock at its finest. Sample hits include "Swimming in your Ocean" and "Mmmm mmmm mmmm mmmm".

Mitch Dorge is also an awesome drummer. Oh and they're Canadian. Rock on.
Crash Test Dummies rule.
by MrKapper July 2, 2006
An ugly person without any romantic value that is not in any part in your social circle that you can just experiment and exercise your dating and sexual abilities in private with and without it insulting your dating reputation.
"Dude, why is he with that fugly chick"?

"Oh, that's just his crash test dummy. He's warming up for his date with Elizabeth".
by Walter Phillips October 29, 2011
The only job you will ever get, I hope you have medical insurance
by ac March 15, 2004
Someone whom is so shocked by what they’ve heard that they’re head recoils like that of a crash test dummy.
“His head went like a crash test dummy when I told him I shagged his mother”
by Mazdog May 1, 2019