Spanking A Friend's Wife

Obviously there was drinking involved when this happened, but I was at a friend's house at a small party, and we were all having a good time. Jeff and Makayla and I were in the kitchen while everyone else was outside, and being the smart asses that we are, she insulted me, and I threatened to "spank her ass". She is young enough to be my daughter, and being daring, she bent over the counter and silently "dared" me to do it. Jeff laughed and nodded, and I slipped my hand up her back, grabbed her hair, and gave her one good spank.

I knew immediately that he was turned on by it, but she seemed pissed off afterward.

The rest of the night, she watched me quietly and steered clear of me, but every time Jeff would get near her, she acted guilty and confrontational, and her eyes would dart to me as soon as he turned away.

I don't know if I creeped her out, or pushed a button she didn't want to admit having.

She hasn't been the same since, and Jeff dodges the entire event.