bahmer, Slatten and badbobby were sitting together having a beer and they begin to discuss the greatest technological inventions of the modern world.
"It is the laser," said Slatten, a man of obvious superior intellect.
"The laser, because with it, you can determine the precise range to an enemy target, you can use it to gather important telemetry information and you can even use it for photography that is almost tri-dimensional."
"No," interjected bahmer, also an intelligent person, obviously on a par with the Marines phenomenal mind.
"It is the radar. With a radar you can track incoming aircraft and missiles, you can determine the speed of the particular vehicles that are approaching your ship and, if you use it right, you can even heat your lunch."
"I disagree," said badbobby, a man of, well he's Swabbie and all Swabbies are borne out of a diminishing gene pool.
"The greatest invention is the thermos."
"The thermos?" exclaimed the other two.
"Yup, a thermos," badbobby said. "I mean, just think about it.
If you want something hot you put hot stuff in it. If you want cold, you put cold stuff in it."
"Yeah, so?" quizzed the other two.
"Well," said the Swabbie, "How does it know?"