look up any word, like cunt:
 
1.
When one is so high on marijuana.
'Ass high' is a stage of high greater than 'I'm feeling it', and greater than 'I'm high', but less than 'I'm fucked up'.

The term 'ass high' is often used in conjunction with the word 'Nigga' when referring to someone who is ass high.
Oh shit son! That nigga is ass high!
by Gloryboy811 November 07, 2012
 
2.
the state after doing drugs up your ass hole. usually someone would light a joint with their farts then inhale it through their anus. but it is also common to snort drugs like cocaine up, reaching farther than the rectum, on occasion.
person 1: "Oh, man i like, really have to take a shit."

person 2: "Shut up, you retard. If you need to go then just go."

person 1: "It feels kind of funny. I think I might of had some bad granola."

person 2: "Whatever... just don't go if you're ass high. It's too dangerous."
by alfred dickcock August 23, 2012