I've played all of these tutorials, I have trouble remembering my past and I was very young so that's particularly why I never gotten that at the time but probably it would've been more prominent in the mind if I understood it back then. They definitely expected both children and adults to be interested with the game.
Subtitle: or strength, gives it more oomph, stiffness controls how erect your piston is, oh I do hope you're not smirking, it isn't funny or clever. It actually is quite funny
When replaying LittleBigPlanet this was hilarious to me. Not just because of him saying "Stiff" and "Erect" but also because he callled me out for smirking(I was)