Perhaps you were doing math or science in your Portuguese lesson in #4... folding it 6 times is easy... after that life becomes very difficult... 8 times ... well... at 8 folds, you have a stack of paper 256 sheets thick... did you really get to 8 folds? Superman!
Oh... I used to be a teacher... trouble with me was that if someone started doing something like this in class we'd follow it through... as long as we came back to the topic we started out with... eventually. I loved it.