To tease, fool, or jest with someone. I'm just ribbing you, Tom—I'm not upset at all! I thought you were being serious; don't rib me like that!
See also: rib
1. n. a joke; an act of teasing. I didn’t mean any harm. It was just a little rib.
2. tv. to tease someone. Please don’t rib me any more tonight. I’ve had it.