Easter eggs are usually filled with a fun surprise. These eggs, however, are filled with concrete. An odd choice, but the company that makes them in Russia is helping pranksters to rig a traditional holiday game. A company called Petrobeton created ‘invincible eggs’ ahead of Russian Orthodox Easter. During the holiday people participate in egg fights, in which they tap Easter eggs against each other to see whose will crack first. Inside Edition Digital’s Mara Montalbano has more.