here are some knock knock jokes to tickle your throat

knock knock  

who's there

pie

pie who?

pie me a river

Knock   Knock

who's there

Babies

Babies Who?

Knock   Knock

Who's there   

Piggy

Piggy Who ?

Piggy pork chops

Here's a funny story I know you will enjoy.

There once was a man who was selling pretzels

He said  if you buy 400 pretzels  you will get a free baby

Then a man came  and bought 400 pretzels

The guy selling pretzels   said  Here's your free baby