Dumbfuckasaur

A colossal Dumbfuck of an individual, usually chalk full of dumbfuckery; A genuine dumbfuck, pure stupidity down to the core related to the now extinct "Dumbfuckasaur". The research of these creatures is very limited due to their short lifespan. It's apparent that through evolution, characteristic traits of this creature have resurfaced into modern day human society.

"You imbecile, quit acting like a Dumbfuckasaur."
"God, that person back there at the store sounded like one of those ancient Dumbfuckasaurs"
"The way he tried to vacuum the grass, reminded me of a Dumbfuckasaur."