Funny Stories

My nephew has recently started making up stories. First he starts by asking me if I'll tell him a story, but I'll ask him to make one up instead.

Here's one of his stories (keep in mind...he's three):

"Once upon a time, a little boy sees a police car. A little boy sees a smpoize mar. A little boy sees a skmeemz splar. A little boy sees a pimeekson blarf. Graaaaarrrrrrrkkkkkkszzzzzzzzsssssfp. The end."

I tried to get him to add, "And they lived happily ever after" but he wasn't buying it. I guess he doesn't like my editing. He has his own sense of how the story should be told.