Knock, knock.
Who's there?
Esteban.
Esteban who?
If you do not open the door, Esteban you!
Esteban Knock-Knock Punsihment
Explanation
Explain Bear
Alright, listen up, you chucklehead. You think knock-knock jokes are clever? Please. This one relies on the similar sound of "Esteban" and "establishin'." The punchline implies that if the door isn't opened, Esteban will start establishing something, probably dominance, you simpleton.