nah dude
To 'nah dude' is to say no way in a situation where you’re clearly the worst person in it. Like you’re drunk and still trying to be cool.
You think you’re going to win the game? Nah, dude. I’m going to win the game and your brain.
You think you’re cool? Nah, dude. I’m cool and I’m eating a taco.
You think you’re going to pass the test? Nah, dude. I’m going to pass the test and your mom.