I was playing the one where you're in the school or whatever and I walked by this chalk board and it had an eraser with an American flag for its cover. Seems rather harmless, right? Well, IT WASN'T.
I had walked by it before exactly realizing what it was and went to turn around to take another look at it and BOOM, THERE THE FUCKER WAS. I yelled "OH, SHIT!" at the top of my lungs and fell out of my computer chair.