Sampras gets pulled off the street into what looks like a warehouse, inside there is a tennis court with hundreds of balls around
MacEnroe: You know why you're here, right?
Sampras: I'm kinda dull
MacEnroe: We'll fix that. Do what I do. Throw your racquet! Yell at the ref: "You were wrong!"
Sampras [sitting with a clipboard taking notes]: you were wrong (said without enthusiasm while wagging finger)
MacEnroe: "It was in!"
Sampras: it was in.
MacEnroe [sitting in ref's chair]: Yell at me, I'm an idiot! Eat your pizza the wrong way!
Sampras: Why didn't you say so? [eating pizza crust first]

[insert pizza talk]

Sampras: Two at once!
MacEnroe: I've created a monster.