Not one event but peoples lack of an ability to read or see massive signs will always be a funny one.
Like, dude, see the big sign saying to use the other register? Why are you standing in front of that sign asking for instructions. Same thing with doors. I got a big ol’ sign telling you to use the other door, and people still either walk right into the door or use way more force trying to push it open.
THEY EVEN HAVE ARROWS SHOWING WHERE TO GO