used to define huge sarcastic assholes, that end up becoming amazingly sweet. Seans know exactly how to piss you off and then five seconds later have you cracking up. Huge jerks, but gotta love 'em.
A Teenage white kid that has an abnormally large penis usually ranging to 7.5 inches to

An all around amazing person, everyone knows there "Sean-Thomas's"
Also known as a master in bed
Wow he has a penis almost as big as Sean-Thomas

Cathal really wants Sean-Thomas
by ???T3l??? February 15, 2014
Get the Sean-Thomas mug.