M.I C. Problems

My bought a new star for the tree, battery operated, cute red LEDs, Made In China. It has developed a mind of its own and comes on and off no matter where the switch is set. She was having a hissy fit because it was not working the way SHE wanted it to. She asked me why it was like that I told her M.I.C. when she asked what that means I told her, it didn't help.......Any else having M.I.C. problems right now?