Raining elephants !
Put them both in the trunk of your car, drive around the block, and see which ones happy to see you afterwards.
A person who stays up all night wondering if there is a dog.
Paraffin and matches.
A frog -- it croaks every night.
To stamp out flaming ducks.
Helephino.
Because when they dance they make it rain.
A) Hailing taxis!