Lackwag
A lackwag is a person who tries to act important but ends up looking like a fool. They’re like a goldfish wearing a crown, still a fish, but with a little bit of fake glory.
He showed up in a limo. Then he got stuck in traffic and started yelling at the car.
She wore a fancy dress but tripped over her own shoes.
That guy had a nickname. Then he forgot what it was.