I'll start off the story and you add the next sentence.

Onions

 

To share with dead balto

 

Who happens to have his buttcheeks glued together

 

With unicorn saliva

 

Raining from the sky

 

A HUGE DONUT AND

 

A monster pizza

 

Had private time and made a pizzanut that went to Harvard and became a..

 

Zoologist

 

Then got fired for living the animals a little to much

 

That looked like this.

 

And found a job in the *** industry

 

Who then died of

 

Bladder cancer

 

and then his wife said

 

And sucked my plumb and then

 

she got remarried to a

 

Troll

 

That is really small

 

and is