I know tha someone looking at this rice tossing photo may get concerned about the potential harm to birds.The rumor, that rice expands in birds' stomaches and makes them explode, has been circulating for years. Turns out it is not true; rice cannot expand and it is not harmful to birds. So, if you want to throw rice at your newly married friends, go ahead and do that. Not everyone finds it enjoyable, but looks like these grooms did.