A donkey for a trade
A donkey for a trade means you ended up with a way better deal. It's like trading your old phone for a new one that can take photos of your face and also play music.
Your brother said, 'You got a donkey for a trade.' after you told him you joined a band.
Your friend said, 'You got a donkey for a trade.' after you told him you got a scholarship to a fancy school.
Your crush said, 'You got a donkey for a trade.' after you told him you joined a band.