Don't wave your fingers at them, they might think they're fish.

He stopped waving his fingers in front of my eyes.

She set her cup down and waved a finger at me.

I was waving my little fingers in the air even before she spoke.

"I'm not the kind of person who goes home and plays on the computer all night," he said, waving his fingers.

Kent took back his hand and waved a finger at her.

She shook her head, then turned to wave a finger under his nose.

I wave my finger at him and nod - go on.

Richard waved his red finger in the direction of the soldiers on the team.

All this by just waving their fingers, plus some expressive body language.