Imagine being the first human to Rick Roll another species.

my good answer is the wikipedia page for human

by evil answer is the wikipedia page for the dark forest hypothesis

Backdoor Sluts Vol. 7

"Mlorp, how do these beings even manage to procreate? This one is using the incorrect orifice, and this one removed his genital proboscis moments before copulation was complete!"

"Let's leave them alone, Floop. They will extinct themselves shortly."

I would send them a song letting them know I'd never gonna give them up.

I send Independence Day and to tell them it is a documentary. Now they know not to fuck with us.

The music video of Never Gonna Give You Up by Rick Astley

A badly trained LLM.
Let them ask whatever they want of it without any way of verifying if what it says is correct.

Any episode of Ancient Aliens.

Star Trek: The Next Generation

Darmok, S5E2 of Star Trek: The Next Generation.

I think one of those nice Attenborough documentaries. Wasn't there one that showcased the Earth? Seems like a nice gesture to put that forward.

Smarter people have already figured this out. I'd send them a copy of the golden record we put on Voyager. It contains the kinds of things that could convey "this is where we are, this is what we look like, we've figured out about this much of this universe so far, and we make stuff that isn't utilitarian (art)"

The Anarchist Cookbook.

because it would be funny

A recording of 4'33".

zip bomb

My fart in a jar

A collection of this, this, and this.

Drinking from cups

WAP by Cardi B. I wanna see their faces.

The Gummy Bear song in German with this feel good tune attached

Idiocracy packaged as an accurate history of the most powerful species on the planet.

i wonder how aliens would take sarcasm:

aqua - barbie girl

life in plastic, it's fantastic~

bonus wholesome:

louis armstrong - what a wonderful world

The Tropic Thunder DVD commentary

Maybe Avatar: the last Airbender (animated series, obviously). Wholesome (overall), and maybe they'll think we all have powers.

I'm sending them heavy metal. (Da movie) I don't think it would be the best or worst impression, but it would be so worth it to see how aliens react to that shit.

The Twilight Series books and DVD sets.

A collection of Nanowar of Steel official videos, with a bonus Gloryhammer - Gloryhammer so they know we're srs bznz

Buckaroo Banzai.

Rust in Peace

A Serbian Film

All of dragon ball z. Everyone should watch dragon ball z.

First episode of Carl Sagan's Cosmos.

Monty Python-Holy Hand Grenade