To be honest, so did I! She had a remarkable wardrobe change, and she looked right at me as she slowly walked in and sat on his lap. I could see her little crooked smile when she felt his hard cock.
I gasped (hopefully quietly) when she reached behind her and started rubbing his hard cock. A cock that turned out to be remarkably large. Thus the little smile from my wife.
This turned into a night we will never forget. Any of us.