Tony was looking at her. He knew all of this was boring. He wasn't in the mood to even sit through it with a hangover. Why should he? He never saw the point in any of it. PLus he was Tony Stark and could do what he liked.
He knew Pepper never liked it when he tried to skip out on meetings and stuff.
The genius walked onto the meeting grumbling.

Tony huffed at that comment "I'll arrive when I like." He growled angrily, the rage back "I'm Tony Stark." he goes and gets ready to start the meeting. "Ready? what ever." He listened and made comments when he should. But he sounded like he didn't want to be there. He was hangover and in a foul mood, The foul moods seemed to come and go, his anger more than anybody was ever used to. He could see people were wary to even speak to him,
After about half way Tony just walked out.
The look on his face was of annoyance. His headache had faded by then.