ROFL at the image of flatulent Martian cows living underground! If only Bessie could've held that one in, we'd have never found them!
I can see the Martians hiding in their little caves as the Rovers pass by:
"Yornlkt, shut up. They're getting closer."
"I'm being quiet, Bcvinq, you shut up."
"No, you shut up."
"You shut up."
"No, you."
"You."
"Who farted? Oh, crap, the little thing with wheels just stopped!!! Way to go Yornlkt, you moron. There goes the neighborhood."