6+ Short knock knock jokes

6+ short knock knock jokes: we've rounded up the very best ones — quick ones you can tell in seconds. Skim to find your favorites, or hit the shuffle button for a random pick. All PG-rated and ready to share.

• Knock knock. / Who's there? / Interrupting cow. / Interrupting cow wh— / MOO!
• Knock knock. / Who's there? / Boo. / Boo who? / Don't cry, it's just a joke!
• Knock knock. / Who's there? / Atch. / Atch who? / Bless you!
• Knock knock. / Who's there? / Ice. / Ice who? / Ice to meet you!
• Knock knock. / Who's there? / Cow says. / Cow says who? / Cow says moo!
• Knock knock. / Who's there? / Harry. / Harry who? / Harry up and open the door!

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