Mom visits, your fiance is there, Mom spanks you OTK

You hoped this would never happen, but you secretly knew it would.
Every time Mother visited, or you visited her, she spanked you, for some reason, or no reason at all.
This time, Mother was visiting, while your fiance was there.
Mother asked her, "Have you started spanking him yet?"
"Well, no..." she answered.
Mother said, "Well, let me show you..."
And Mother turned to you, and said, "Get ready."
Obediently, you strip to your briefs, and go over her lap, as Mother talks to Ann.
Mother takes down your briefs, and begins slapping your bare bottom with her hand, long and hard.
You're old enough and big enough that it doesn't really hurt.  It's just so embarrassing to be spanked like this while your fiance is watching.
Then Mother says, "Ann, get the hairbrush out of my purse."
And you think, "Oh, now it's going to hurt. I hope I don't cry, like I did last time."
As the hair brush slaps your bottom, you know such hopes are in vain.