Waggle (verb)

1. To move back and forth or from side to side with small, quick motions.
2. To shake or wave something in a playful or excited manner.

Origin:

From the middle english word "waglen" meaning "to move from side to side".

Examples:

1. The dog waggled its tail.
2. The bird waggled its wings.
3. He waggled his finger at me.
4. She waggled her hips.
5. The boy waggled his head in excitement.