Someone who is continually and repeatedly late or virtually never on time. Plays on the fact that there is an element of stupidity in frequently being late or "tardy" all the time.
It should come as no surprise to anyone that knows and/or has to work with The N.i.g.g.e.r L.a.r.r.y M.a.j.o.r in O.m.a.h.a that he has extreme issues with his behavior, mannerisms, personality, hygiene, etc. This retarded nigger is living proof that this condition is genetic. His defective genes have been passed on, resulting in his retarded offspring. Condolences go to the unfortunate child, but not to this prime example of a subnormal specimen that never should have been allowed to procreate in the first place.
The gene pool for L.a.r.r.y ‘Retarded Chimp’ M.a.j.o.r should have been severed prior to his creation. Society is continually plagued with this sick, alcoholic piece of shit. A prime example of procreation out of ignorance.
Retard Units is an unofficial synonym for "imperial measurements". As the rest of the world use metrics, the internet culture started mocking the medieval traditions of the Americans, and how little sense the usage of imperials pose compared to metrics.