Не доживаю до оргазма

I've caught my elf slacking off! He claims he's finished all of his work. But, instead of looking for more work he's took a break. I decide that I will have a little fun with him - and then find he is erect. So, not only slacking off work - but masturbating. I guess a first punishment is that I've interuppted his wank - but it's going to get worse for him. I tie him to the bed and start edging him. It's great fun having him tied, teased and denied - and I even get the vibrator in for good measure! As this eventually bores me I give him a 10 second countdown in which to cum. If he fails, I will leave him tied and denied. However, he actually manages to succeed - so, I ruin his orgasm and leave him alone and covered in cum. It's all in his Elf tutu, so when I do come to release him later he'll have to finish his work covered in his own cum.