Typically Identifiable by some snazzy birkenstocks, a pair of old man pants and an obsession w/ the color pank, A Thundercles McButterpants is typically a tall, gangly, rather unkempt individual with a nasty case of bed head.
Geez, If that Nate Long kid had some old man pants, he'd be a perfect Thundercles McButterpants
by Ike February 23, 2004
One who has greasy, long, stringy hair and wears birkenstocks all day long.
Man that birdsall is such a Thundercles Mc Butterpants
by Anonymous June 02, 2003