I’m honored that this often shows up on the internet. Here’s the correct version, as published in Omni, 1990.
THEY'RE MADE OUT OF MEAT
"They're made out of meat."
"Meat. They're made out of meat."
"There's no doubt about it. We picked up several from different parts of the planet, took them aboard our recon vessels, and probed them all the way through. They're completely meat."
"That's impossible. What about the radio signals? The messages to the stars?"
"They use the rad...