August Assignment: Plot Twist

Write a short story (don't worry--it can be reeeeeally short if you want) with a plot twist.  It can be in the beginning, middle or end.  Whatever.  Just stick one in there.  Somehow, surprise your readers...which would be us.  And if you haven't done your July assignment, don't feel like it'll be lame to post it late--it won't be!  Or don't do it and do this one.  Whatever!  Let's just keep this thing going.