nadnoda
A nadnoda is when you try to be cool but end up being a complete embarrassment. No one likes a nadnoda.
'Bro, I’m just chillin’,' he said. Then he tripped into a puddle.
She tried to flex her new shoes, but they fell apart in the middle of the hallway.
He texted 'I’m out' and then showed up 10 minutes later, out of breath and sweaty.