mad aleck
A kid who acts like they’ve been given a million dollars and also have a caffeine IV. Parents say this when they're ready to give up on life.
That kid is a mad aleck. He ran through the park like he was trying to beat a speed limit.
She’s a mad aleck. I’ve seen her jump on the bed like it’s a trampoline and she’s trying to break it.
He’s a mad aleck. He’s been running around the house like he’s on a mission from God.