an unscrupulous female, usually given to indicriminate sexual promiscuity; especially appropriate for such women whose physique has deteriorated significantly.
To the intellectual bad ass it is a more effective and more offensive way to say someone is a jerk. Jerkwagons tend to seem nice at first, but then turn around to slap you in the face...with their wagon, that they carry all their bullshit in.
Person 1: Hey how's it goin??
Person 2: Pretty good, haven't seen you for a while! You?
Person 1: Same, hey want to hang out later?
*Person 2 is offline*
Person 1: Wow, what a jerkwagon.
Harry: Bellatrix killed Sirius! My last living family!! *cries*
Ron: Sorry mate, that bitch is a jerkwagon.
A useless piece of equipment, usually military, used to refer to a mule-drawn freight wagon which had been pieced together from dicarded or substandard parts, and subject to frequentbreakdowns. Jackwagons typically were good for only one or two uses, then abandoned or discarded along roadsides and in ditches, and were often re-cannibalized to create new jackwagons.
"Maybe we should trot on over to mambypamby land and get you som confidence - you jackwagon!" Geico commercial
A white kid that acts and talks like a typical welfare nigger, and thinks the world owes them something, and thus will never be gainfully employed and end up in prison.