Yeah, it still works for Benjamin, I think it's the same Michelle, when I say if you do it again you are going in the naughty corner he wants to go in straight away!
Not sure if you saw my other post where he hit me with bunny then told bunny off and put him in the naughty corner then made him say sorry, hug and kiss me, then bunny hit me again and we did it all again, I was trying to not let him see me laugh but it was quite cute and funny!
Luckily he does still sit there for 2 minutes when he has to and he still seems to know it's punishment.