What is a Shaggin Wagon?

Question

So there is this car parked like a block away from my house and it says on the back "Just Married" and then "Shaggin Wagon" What is a Shaggin Wagon, in this case. Oh and by the way it's a car not a station wagon. Just curious.

Answer 1

they have s*x in their car.

Answer 2

Agree with brea.

Add that the term "Shaggin" is five decades old and initially applied to

carpeted floors employed for s*x.  Introduction of carpet to vehicles

added more miles to life of expression.  

Answer 3

have s*x in their car. per my husband