Cellular (2004)+4
Well, Guess What? You're Adults (And He's Not Even Here)
by nik_knows_nothing
Here are three things that happen: 1. Thanos never comes. 2. Tony Stark dies anyways. 3. A phone number is forgotten. Really, no one of those things is so strange. It could've happened to anyone. MJ's just really, really lucky. (A Cellular/The Call AU where MJ answers the worst wrong-number call that anyone's ever gotten in the history of wrong-number calls.)