You have to stand on some specific places before you stretch, or you won't be able to get into the wall.

Wall Zip in Music World

Reach the ceiling and hold Left until you fall down, do this until you get stuck in the wall. Hold Down and Left and wait the screen to shake, after that, stop holding Down and keep pressing Left.

Wall Zip in Board Games World (only in all stages)

When I submitted my first run, the game had only one category (Beat the Game) with no rules. I always research about the game before I start to speedrun it. I saw on gamefaqs that you can skip stages by simply pressing start and select, and I made a new route based on this.

Now, can you explain why you did another category for my run in a game with 3 runners? Why did you decide it's a debug feature? You can mail me the explanation card drawn with crayon you offered me in your "mod reply" that you deleted.

Thanks.