A chow hound met another chow hound.
"What do you think, Mason, how many C-rations can you eat on an empty stomach?"
"I'm sure I can consume five rations," was the qualified answer.
"Well, it's impossible."
"Why?"
"Because after you've eaten the first one you won't eat on an empty stomach
any more."
"That's right! I'll tell this first-rate joke to that glutton Calvin."
Next day Mason cornered Private Calvin.
"What do you think, Eddy, how many C rations can you devour at a go on
an empty stomach?"
"Six."
Mason pulled a long face. "It's a pity!"
"Why?"
"Had you said 'five' I'd have told you a first-rate joke!"