a) Acting or being ridiculously happy.
b) A ridiculously good mood.
Comes from a mispronunciation of the word hyphy made by me while I was rolling balls.
"I feel hella haphy right now, bitch."
"Damn, that dude is haphy as a mothafucka."
Haphy movement or lifestyle of being crunk or full of enrgey
slang from da bay area
Tell me When to go iz da most Haphy song eva