What the fuck did you just fucking say about me, you little bitch? I'll have you know I graduated top of my class in the Navy Seals, and I've been involved in numerous secret raids on Al-Quaeda, and I have over 300 confirmed kills. I am trained in gorilla warfare and I'm the top sniper in the entire US armed forces. You are nothing to me but just another target. I will wipe you the fuck out with precision the likes of which has never been seen before on this Earth, mark my fucking words. You think you can get away with saying that shit to me over the Internet? Think again, fucker. As we speak I am contacting my secret network of spies across the USA and your IP is being traced right now so you better prepare for the storm, maggot. The storm that wipes out the pathetic little thing you call your life. You're fucking dead, kid. I can be anywhere, anytime, and I can kill you in over seven hundred ways, and that's just with my bare hands. Not only am I extensively trained in unarmed combat, but I have access to the entire arsenal of the United States Marine Corps and I will use it to its full extent to wipe your miserable ass off the face of the continent, you little shit. If only you could have known what unholy retribution your little "clever" comment was about to bring down upon you, maybe you would have held your fucking tongue. But you couldn't, you didn't, and now you're paying the price, you goddamn idiot. I will shit fury all over you and you will drown in it. You're fucking dead, kiddo.

"You just lost The Game"

Drums....drums in the deep. There is no way out.

We've been trying to reach you about your car's extended warranty

Or a variation:

"[Untranslatable] destructed leaving just an asteroid belt. Mars now uninhabitable. Terraforming of Earth seems to have been successful now that the saurian races are eliminated. Trying again."

I like both of the "Earth is our final chance" ideas, but they don't explain why we find skeletons.

Instead how about the message being "Go back through the portal before it closes!" That's reminiscent of situations like the first planet found in Stargate: Universe where they learn that there's a time limit, or the one Star Trek: TNG where they find a potential stable wormhole but Geordi sees it may not be and the Ferengi scientists don't believe him.

"First"

"We apologize for the inconvenience."

“SEND NUDES.”

"There are no bananas here"

Time begins and then time ends.

And then time begins once again.

It is happening now, it has happened before, it will surely happen again.

He who is valiant and pure of spirit may find the Holy Grail in the Castle of aaaaaaaaaaaarrrrrrrrrrrrrrrggggggghhhhhhhhhhhhhhhh

"Please pick up after yourselves. I am not your maid."

Be quiet or They’ll hear you

Kilroy was here

"Halfdan Bjornson carved these runes; they're really high up."

"Aim for the stars they said..."

"People are all the same"

"Fuck Spez"

Don't mess with time.

"Don't trust Elon"

Two peanuts were walking down the street. One was assaulted. Peanut.

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(The cool s)

If you're here, you probably did a bad job with Earth. Level failed! (Ambient Level failed music)

"We were not mission critical."

https://en.wikipedia.org/wiki/Stars_on_Mars I'm watching it and I'm only slightly ashamed.

D-list celebrities (I'm being generous) compete to win something. I'm not sure what they win. An escape from irrelevance? It's sort of hosted by William Shatner, who reads pre-taped clips to setup challenges and introduce new contestants. And let me tell you, he earned all $500 he was paid to do it.

I'd never heard of 90% of the people involved, which makes it easier to point and laugh. Lance Armstrong is on it and (surprise) he's a toxic asshole. Andy Richter (who I liked back when he controlled the universe) is on it and he's also a bit of an ass.

In any case, it will now be my headcanon that the rejected stars aren't rescued and sent back to Earth, but are forced to die in a Martian cave. And that Shat knew the whole time.