A state of being ridiculously high off of marijuana so much so that you see shimmering and may hallucinate. Can be used simply to express being very high though.
Can be shortened to HD for use in code.
An acquired disease of herpes when the recipient got it from someone who has blatantly obvious herpes,;you would have to be blind to miss it. Indicating the "herp derp" part of the word.
Mike: Dude, I just did it with the new chick.
John: Why? She has herpes, are you stupid?
Mike: Fuck me man, now I got herp derpes.