jerkwad also known as the word jerk but you use this when you think the person doesnt deserve the name as jerk because he/she is way worse and its insulting all other jerks
Q. Why do we call a backward place a "jerkwater" town?
A. Steam engines needed to refill their boilers from water
towers next to the tracks but some "towns" were so small
that they lacked a water tower. When trains stopped in
those places, the crew had to find a nearby stream or well
and, bucket-brigade style, "jerk" the water to the train.
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.