What is Threetard?
1.
Nascar fans who worship and idolize the late Dale Earnhardt.
There were a couple of threetards down at the Dover race. Don't they know he's dead?
2.
a person who accessorizes his or her Chrysler 300
The threetard put a Bentley grill on his Chrysler.
See
3.
Noun. One step above conditional, behavioral retardation. The threetard, let it be noted, is not a variant of the classical use of "retard." Rather, one becomes a threetard through repeated indiscreet or moronic behavior. Therefore, the threetard monicker is one that is earned and is never in reference to the mentally handicapped.
You should have seen Billy at the dance with Sharon. He tried dancing the 'Macarena' to Kenny Loggins' 'Danger Zone.' What a total freakin' threetard! Dang.