Applicant girl hiking skirt up, preparatory to a spanking. She looks rather angry. Sternly lecturing a naked man (or boy).
I use spanker-paddles like this one. They can make any man howl in less than a minute.
I’ve often thought that torturing spies for information is otiose, as well as evil. Strip them naked, and put them across skilled Dominas’ laps. They’ll soon be babbling all their secrets between sobs.