New meaning to 4DX. Photo: Giles Keyte/Universal Pictures If a quick request to not sing were enough to stop theater kids, then they would not be theater kids. AMC is planning to air a “please don’t sing”–themed, 30-second-long advertisement before upcoming showings of Wicked , per ABC . But, this is said with love, we’re not sure if that is enough of an “immovable object” to compete with “the unstoppable force” that is the theater-kid impulse to sing along to Wicked . A better option might be