Be careful what you say

A six year old went with his grandmother to vistit his granfather in the hospital.

When they get to the hospital, he runs ahead of his grandmother and burts into his grandfather's room.

"Grandpa, Grandpa", he says excitedly. " as soon as Grandma comes into the room make a noise like a frog."

"What?". asks his Grandpa.

"Make a noise like a frog"

"Why?" the old man asked with a chuckle.

"Well, " said the boy. " Grandma said that as soon as you croak, we are going to Disneyworld."