Played Portal 2 last night. And a certain portion of this morning. *cough*

I somehow managed to solve two puzzles entirely by accident, when I was in that state where you have both portals spitting you "up" so you just bounce up and down. I just randomly fired and ended up in the right place.

I don't even

EDIT: There's a plot detail the player can figure out before Glados does. I like to think that at that point, Chell stayed silent just to troll her.