How can rubber ducks explode?

This is kind of silly, but it answers the question.

A rubber duck can explode when you:

-Put a grenade in it and throw it

-Launch it up in a barrage of fireworks

-Put it beside dynamite and set it off

-Put a mine in the ground and aim the rubber duck at that point

-Cover it in gasoline and set it on fire

But you would never do something like that because these are all dangerous and something you could never do, because rubber ducks are adorable.