jacks head
A person who thinks they're the best looking person ever and acts like they're rich even when they're broke. Their head is so big it gets stuck in doors. They smile like they just won the lottery, even when they're paying for it with ramen.
My cousin's a jackhead. He walked into a door and got stuck like a stuck pig.
She came in laughing like she just got a million bucks, but she's still living in her mom's basement.
He smiled like he just won the lottery, but he's still buying beer with nickels.