4. Make An Omelette & Tell You (Iron Man 2)
In Iron Man 2, after Tony Stark fixes the problem with his arc reactor (which was killing him), he is talking to Black Widow when he is overheard by Pepper Potts saying "for the moment, I'm not dying". Having not told Pepper about the problem with the arc reactor when it was slowly poisoning him, she is shocked to hear this revelation and can't believe that he was dying in the first place or that he wouldn't tell her about it when he was. As a result, he has to explain himself to her and insists that he was going to tell her. Of course, this doesn't satisfy Pepper and she gets worked up, at which point Tony raises his voice and says "I WAS GOING TO MAKE YOU AN OMELETTE AND TELL YOU!" Oh, well that's alright then Tony!