What is big and grey and soapy, and goes round and round?
An elephant in a washing machine.

What is big and grey and wears a mask?
The Lone Elephant.

What is big and grey and weighs 4 tons?
A mouse built to government specifications.

What is big and grey and would kill you if it fell out of a tree?
An elephant.

What is big and grey one minute and turns white the next?
An elephant in a deep freeze.

What is big and grey one minute and turns white the next?
An elephant in a microwave oven.

What is big and grey with red spots?
An elephant with measles.

What is big and grey, has a trunk and climbs trees?
An elephant.I lied about it climbing trees.

What is big and red and has a trunk?
An elephant holding its breath.

What is big and yellow and has a blocked trunk?
An elephant drowning in a bowl of custard.