Jackassident 

When a jackass does something that causes bodily harm to another a jackass the result is a jackassident, or unplanned jackassery.

When your in you shop sharpening your knife that is assisted opening and some asks, "Have you ever opened this on someone else?", and the other person says, "No", and sticks out his leg. Then the man holding the knife trys it and cuts the persons leg, thus you have a jackassident.

Jackassident by Jimbob the Bounty Hunter July 1, 2009

Jackassidness 

Jackassidness: When an individual attains the highest level of Selfishness, self centeredness and complete disregard for anything else outside of themselves.

I am astounded at his jackassidness!

Jackassidness by Tabfan October 29, 2015

jackassInTheBox 

a stupid clown.

That Charlie is a real jackAssInTheBox.

jackassInTheBox by mellowredspell August 14, 2003