Tortoise Family Ice Cream

A family of tortoises went into a cafe for some ice cream. They sat down and were about to start when Father Tortoise said:

- I think it's going to rain. Junior, will you pop home and fetch my umbrella?

So off went junior for Father's umbrella, but three days later he still hadn't returned.

- I think, dear - said Mother Tortoise to Father Tortoise - that we had better eat junior's ice cream before it melts.

And a voice from the door said:

- If you do that I won't go.