All of a sudden, the wife smacks her husband…

All of a sudden, the wife smacks her husband. The husband was totally dumfounded and asks, „What was that for?“ Wife said, „Because, you are a bad fuck“. Couple of minutes later, the husband smacks his wife. This time, the wife was confused and asked, „And may I ask what’s that about?“ Husband said, “ Simple, because you know the difference.