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
One who has greasy, long, stringy hair and wears birkenstocks all day long.
Man that birdsall is such a Thundercles Mc Butterpants
a scottish guy that decides his pants are too tight and decides that a lubricant would work sufficiently in there place.
No leave your pants on McCloud! Ah what do ye think yer doing with me goat oil! Ack! NOOO! Damn thundercles McButterpants.