A reference to the total defeat Theo Archibald usually gets while competing in any game/sport. The defeat is so bad you realize that it's not unlike the many defeats Theo Archibald is known for.
Damn Jason is really good, he Theopwned me hard!
Concatenation of the name Theo and the popular term pwned. Usually referring to being pwned by Theo (Archibald) in an online FPS game (most often with the sniper rifle)
"Doh! I've been theopwned"