RUN INTO A WALL!
You run into a wall. HEY, a minute ago you were swimming now you're
on the ground unconscious. Within 10 minutes you were up again. You
feel a giant lump on your head. Where did the wall hide. What is over
there. You jump up to see and you trip and fall. "this is a
rip-off," you yell to yourself. I'm supposed to be protected from
harm here. you turn around. BOO!
