Quote the film, man!
The first 20 or so minutes is some of the best stoner comedy material ever. How about:
"Hey you wanna get high, man?"
"Does Howdy Doody got wooden balls, man?"
"I even smoked that tied stick."
"Tied stick?"
Yeah you know, that stuff that's tied to a stick."
"I could probably smoke this whole joint, man, and still walk away."
"What's your name?"
"....Isn't it on there on the license man?"