When referring to hookah, someone who acts like they know what they are talking about, but it is obvious they don't.
Joe: " Hey man, can we try the melon?"
Hookah Douche: "You sure man? It's pretty harsh..."
Joe: (Sarcasticly)"Hey man you were right, it was pretty harsh."
Hookah Douche: (Serious)" I told you man. I know what I'm talking about. I smoke like 5 a day."