oblivisumption
When you think you're the only one who's clueless and everyone else is doing things your way like a boss, even if you're the one who forgot to bring a drink to a bar.
"I didn't bring a drink, why are you all drinking?", said by someone who shows up to a bar and then asks for a free drink.
"I left the concert early, why are you still dancing?", said by someone who got lost on the way and still thinks they're cool.
"I texted you in all caps, why are you still talking normally?", said by someone who thinks yelling is the same as communicating."