Often used by fans in this form or as DEEEEEEN! when Dean Winchester reduces a fan with his awesomeness.
DEEN: (noun) et. Young Dean Winchester proudly demonstrating how to write his name in yellow snow and unintentionally misspelling 'Dean'. A sound of pure gratification. Exclaimed when extreme pretty, excitement, hotness or wibble has resulted in the destruction of functional vocabulary. Said in a tone similar to "Braaains". definition by lemmealone.