A spanking

Their mother stared at Mike, her eyes glowing with fury. "You know the drill young man."

Mike glanced across at his sister, before turning back to his mother. "Oh come on, we're too old for this now."

Their mother said nothing, but pushed her chair out a little further, patting her knee. "That's two more," she finally told him. "Would you like me to keep going?"

Finally Mike relented, reaching down and nervously unbuttoning his jeans, pushing them down, highly concious of the fact he was stood in front of his mother and sister in his boxers.

Gritting his teeth he knelt down, laying himself across his mother's lap, her hand instantly ringing down five times across his arse.