A "Lenny" is a person that is fat,
greasy, and hated by all to the point of pure hatred.
It is used as a nickname, not a describer. (BUT can still be used as
one.)
The name "Lenny" Originates from "Leonard W. Whitton" The fattest man on
Earth.
Guy: Look at Lenny! He's SOOOO
fat and shit at games, he should fucking
kill himself!
Guy 2: I know right? What a Lenny!