When drugs have taken over your mind, and you no longer control what you see or say.
Or forget why you are doing or saying.
Hallucination, new understandings.
Guy 1: You alright mate ?
Guy 2: Excellent mate, just trippin balls, seein pixies throwin swedgers about the place.
Guy 1: nice
After taking a certain amount of psychedelics, one's mind begins to lose focus on the fabrics of reality, you look in their bloodshot eyes and its clear they are in their own world, and completely fucked up. Most commonly occurs on acid, shrooms or other hallucinogens like dmt
Dude 1: Where am I??? What am I? Aaaaaaargh this is fun!
Dude 2: Woah man, and I thought I was trippin balls....