It's late and I'm wiped out but here's the summary:
Over my knees while I sat on the edge of the bed, pants down, a hard hand spanking on his underpants.
25 hard spanks with the stick across his naked behind.
He howled and promised to improve his attitude. That was around spank 20. I didn't let him out of the remaining 5, so he had a good cry during those.
I took a picture of his marked bottom that I'll post later.
Okay, I'm off to bed. More later.