"Big man in a suit. Take that away, what are you?"
As fussy and spoilt as he was, in reality Tony was capable of liking things. Really. He liked many things. Steve Rogers just wasn't one of those. He liked things that made him feel good about himself. That kind of comes within the territory, being a textbook narcissist and all. He liked working the crowd at Stark Expos. He liked listening to himself talk science with Bruce. He liked flying about in technology so advanced nobody was coming anywhere close in the next five decades or so.
He'd had it up to here, putting up with old, irrelevant people.
Before he could mentally punch Captain America in his perfect teeth, the Helicarrier tipped sideways. Alarms blared. The whole place was drowning in blinking red light. Then the floor slipped cleanly beneath him and he was down.
Tony clambered to his feet and promptly fell sideways as the Helicarrier shook some more. This time, he didn't faceplant into the ground.
Steve had grabbed him tightly by the elbow, securing him. Intense blue eyes bore into him.
"Put on your suit!"
Tony did, but let it be known that it wasn't because of Cap's orders.