An emphatic interjection used to describe the extreme awesomeness of something. Hellz Yeah can be confused with
"Hells Yes," but the latter only describes something kinda awesome. Hellz Yeah, on the other hand, describes something that cannot possibly ever be more awesome
When told that he could have sex with a girl and eat a donut at the same time, Dustin replied, "Are you serious? HELLZ YEAH!"