Being ordered around was irritating enough, but Tony preferred the version where he could smile then blow it all off to use his time more wisely. When Hammer slithered into his ear, Tony not only had to listen, he had to obey and he had to do it immediately. If--if--he was going to leave Thor alone with that puffed up Loony Toon, the only other place Tony could possibly want to be was helping the people of New York pull themselves together in the wake of a giant squid.
Instead, he was standing in Hammer's fucking office, right where he started this thoroughly demoralizing venture, fists clenched and mask exquisitely projecting the cool indifference Tony was sure he couldn't maintain without the opportunity to step on Hammer's little finger for the duration of this 'talk'. "What are you going to do to him? What do you think you're doing to him?" Iron Man demanded, because, and this should have been clear, this little plan of Hammer's might work out in the short-term, but he wasn't going to be laughing soon when the pair of 7-foot-tall, advanced alien royalty caught up with him.