What do you call a grape that complains all the time?

A whine.

I was at the park with my kids, and we saw a guy playing fetch with his dog. The dog was really fast and could catch the ball in mid-air. I was impressed and asked the owner how he trained his dog to be so agile.

He said it was a paws-itive reinforcement

I'm shell-shocked by how much I love oysters, they're a real pearl of a snack.

Why did the music teacher need a ladder?

To reach the high notes.