A "DONK" is an early 70's Caprice or Impala, because the rear of the car looks like the rear of a donkey. A late 70's and 80's square Caprice or Impala is called a "BOX" because that's what it looks like. A 90's Caprice or Impala is called a "BUBBLE" for the same reason.
A 4X4 Challenger, is just that, a 4X4 Challenger. I still like it.
TopHat