You're young and sit in a premium cabin. We get it. A great many of us have done/ continue to do the same. There are tons of these threads. There will also always be ton of people to say something about you, wherever you sit, when you're young, old, fat, skinny, with child, etc. Letting some clown provoke you does nothing to make you seem any better than him. People might look at you, but so what? Look at them. Or just sit down. Once the flight is over who cares.