I say, "We take solace in the theory that Rattle Snakes only inject venom about 50% of the time".
Snake says, "I know what you're thinking. "Did he fire six shots or only five?"...you've got to ask yourself one question: "Do I feel lucky?" Well, do ya, punk?
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No matter where you're at... There you are... Δf:=f(1/2)-f(-1/2)