I met sensei?!?!!?

Hi, guys! Guess what? I met sensei! But the thing is that I DIDN´T KNOW that I met him! Today I was going to see my stamps and when I opened my Stampbook I saw this!:

Yeah! I can´t believe it! This means that:
- Or I met sensei without knowing,
- Or Club Penguin has another bug!

What do you think? Well, the good think is that I now have one stamp more! lol Comment and see you later!