A Jack Production
[You must be registered and logged in to see this image.]
12-year old Joe, 11-year old Frank, 12-year old Matt, and 13-year old Jeff.
You've never been able to get these four boys together before. Thanks to a recent move, you were able to bring all four together. They've become good friends. Unfortunately, they've also managed to get themselves into trouble.
You have no doubt that all four of them deserve a good spanking, and you have permission to do it. That brings you to your problem, though.
Joe gets hand spankings, usually on his underpants. Frank's mom (who is way too strict in your opinion) normally uses the brush on his bare bottom. Matt does get spanked on his bare bottom, but you normally use your hand, and occasionally a wooden spoon when called for (this situation is borderline and could go either way). Jeff gets the belt on his jeans, the same as you used to.
The boys are in trouble for repeatedly ignoring your instructions, but not for dangerous behavior. You think a good spanking is called for, but nothing especially harsh.
Oh, and since the boys are just starting to spend time together, they're all a bit shy of each other.
How should this be handled. (And their parents aren't available, so you can't really send them home).