well it depends on the slave..... see the caning would be something i would enjoy... being a pain slut and all.
the best punishment i ever had....lol yeah oxymoron... best punishment... ok well most effective punishment was when i was forced to sit in a closet for 30 mins, in the dark. i was completely ignored for 30 mins. i'm terrified of the dark and i can NOT STAND being ignored for any reason. i wasnt allowed to talk, at all. if i did, my time was extended. so i couldn't even voice my regret or beg for forgiveness. it drove me absolutely insane.
by the time i was allowed out of the closet i was groveling and begging. i've never felt more submissive.... well... except during my two week cum restriction.... also a effective punishment... orgasm restriction.