Actions need to be done while reading out loud:

the wide-mouth frog

There once was a wide-mouth frog that lived not far from here who one day decided to leave his pond and explore the world.

On the way he met a large four-legged black and white animal with two horns, and
Said (stretch mouth wide using fingers and say…) "Helloo, I'm a wiiide-mouth frog, what
are you, and what do you eat?"

(talk normally again) "I'm a cow, and I eat grass"

(stretch mouth wide) "Oooh, is that so. That's nice."

The wide-mouthed frog then came to a huge bird with sharp talons and a
Curved beak. (stretch mouth wide) "Helloo, I'm a wiiide-mouth frog, what are you, and what do you eat?"

(talk normally again) "I'm an eagle, and I eat little birds and mice"

(stretch mouth wide) "Oooh, is that so. That's nice."

Next he came across another large four-legged creature, standing on his hind legs, with
Sharp claws. (stretch mouth wide) "Helloo, I'm a wiiide-mouth frog, what are you, and what do you eat?"

(talk normally again) "I'm a bear, and I eat honey"

(stretch mouth wide) "Ooh, is that so. That's nice."

The wide-mouthed frog then reached a river where he met a long green slimy
Creature with huge jaws. (stretch mouth wide) "Helloo, I'm a wiiide-mouth frog, what are you, and what do you eat?"

(talk normally again) "I'm an alligator and I eat wide-mouth frogs."

(turn mouth into a small circle and say quickly) "Ooh, is that so. You don't see many of them around, do you."

Oh, there was an art to that ending, frangipanis! Loved it!

A friend told that to me Clough... I nearly died from laughing so much.

Thanks, frangipanis!

It's not just saying the joke that counts, but acting it!