2: Dude, it means "mushroom mushroom."
1: No seriously, what the fuck is shiitake??
2: Just shut your ass.
Teacher: "What did you just say young man?"
George: "You didn't let me finish! I was going to say shiitake mushrooms is what I want for dinner!"
Teacher: "Really? Me too."
*George drops his books*
George: "Shit--ake mushrooms are yummy!"
2.A silly way to make someone think you're going to say shit, but instead you surprise them by mentioning this type of mushroom instead.
(Emphasis on the shiit part of the word.)
9drags out the word by saying it like" shii...take mushrooms!"