Knock knock.
Who's there?
Bertha.
Bertha who?
Bertha day girl.
Knock knock.
Who's there?
Bertha.
Bertha who?
Bertha boat in a dry dock.
Knock knock.
Who's there?
Beryl.
Beryl who?
Berylliant idea.
Knock knock.
Who's there?
Beth.
Beth who?
Beth foot forward.
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BEST EVER KNOCK KNOCK JOKES
HumorKnock knock. Who's there? Doctor. Doctor who? That's right! Where's my tardis? Beware of who is at the door-whoever it is, be it Liz, Adam or Fred... they will have you roaring with laughter and giggling for days. Knock out your friends with this hi...
