Has A Plain Brain

(My younger sister is in high school, and I often pick her up. I overhear a conversation when I am waiting.)

Student #1: “I’m gonna go get a burger… wanna come?”

Student #2: “Over at [fast food] place? Nah, they always mess up my order when I go.”

Student #1: “What do they do?”

Student #2: “I always order it plain but then they put nothing on it.”

Student #1: “You dumba***, that’s what plain means!”

Student #2: “No, it isn’t! Plain means a plain burger! You know, how they’re supposed to make it. No changes.”

Student #1: “I can’t believe I’m friends with you.”