look up any word, like the eiffel tower:
 
1.
An expression hollered by all Americans and other exciteable types in moments of sheer exhilaration.
The 'Cobra': "At last I am getting a transfer away from this piss poor club that doesn't even own it's own stadium. YEE DOGSY!!"
by Matty Boy October 12, 2004
 
2.
An exclamation of utter excitement.
Commentator: The Cobra scores his fifth, and City's seventh goal, here at the Reebok Stadium.
KK: Yee dogsy! We sure is awesome today!
by Super Lexingtion October 08, 2004