This morning after breakfast he wanted to play Chutes & Ladders, so I pulled it out and we sat together on the living room floor with the board spread out between us.
We managed a few rounds before he started trying out his own rules, essentially "I go wherever i want".
"Fuss, ladders go up and chutes go down."
"No, dada, I go down ladders and up slides at the playground."
"I know Fuss, but in this game the rules are ladders only go up, and chutes only go down."
He gave me a flat look, then dug the rules out of the box and made a show of studying them.
"Uh, dada....it says here that ladders go DOWN and chutes go UP."
Fuss in a nutshell.