The astronauts in the Sea of Tranquility were amazed to discover that the moon actually did contain large underground deposits of cheese. Once outside the LEM, they climbed into the LTV and drove across the lunar surface to obtain samples.
In one location they discovered a large deposit of brie and collected 25 pounds to bring back to earth.
They drove to a second location and collected 50 pounds of camenbert.
In a third location they hit a vein of cheddar and collected another 50 pounds of samples.
Mission Control crackled through their headsets that it would not be satisfied unless they brought back at least another 25 pounds of brie. The astronauts turned their LTV around and proceeded to the first location where they collected another 25 pounds of the cheese.
The astronauts were almost back to the LEM when Mission Control radioed that it wanted another 25 pounds of brie.
Disgruntled, one of the astronauts sarcastically snapped into his microphone,
"Have you ever seen such a site in your life as brie mined thrice?"
(The Kay runs and ducks for cover!)