n. Slang term derived from the Freight or Chow wagons used in the late 19th century. These were often the last wagons in a wagon train, making them the least favorable to drive due to the dust, waste, and debris from the front of the train.

When used as in insult it refers to one's lack of intelligence, implying the insultee is capable of no more than operating a Chow wagon.
You're doing it wrong, you Jack wagon!
by MayallsObject32 October 12, 2010
Loser. Someone who is totally worthless.
"Maybe we should chug on over to mamby pamby land where maybe we can find some self confidence for you, you jack wagon!" (Geico commercial asking does a former drill sergeant make a good therapist?)
by kayemmdee July 3, 2010
Lame, whiney, pathetic, take it in the ass sissypunk looking for a pity party.
Quit crying and grow a pair, you little jack wagon!
by Agent472007 July 15, 2010
Someone who annoys the crap out of you or is very rude.
You're such a jack wagon!!!!!!!
by MagicalPony August 17, 2011
A person who does not understand how to drive according to the rules of the road.
That Jack Wagon..He cut me off not even looking right
by JoeyT the Man October 15, 2021
An incredibly large piece of fecal matter which sticks 6 inches out of the toilet water.
Hey guys, get over here and check out this huge Jack Wagon!
by Winky Browneye January 2, 2011
A wagon full of people jerking off playing soggy biscuit
Evan, Dryden, and jack were playing playing jack wagon in the cotton fields
by Eevaann October 31, 2018