1 definition by No irgindwo

HMM

Stands for "harshing my mellow." Something to be used when you are annoyed, or your normally green aura has been turned red.

John: You need to be more responsible! What is wrong with you, don't you have any sense of trustworthiness?
Jeff: Chill out, man. You're HMM.
John: What? Filthy hippie!
Jeff: :P

by No irgindwo May 13, 2012