"When you forgot the keys, so you went back but you remember that the ship doesn't need keys"

"If you think that's strange, you should see how we pee!"

Edit: just a quote from the movie. Not a translation

I need to point out that "aliens communicating in memes" was done by ST:TNG, in the Darmok episode.

Alien: "Shaka, when the walls fell" (essentially Disappointed Guy meme)

Picard: ...

People on Halloween calling you lazy

For dressing up as a human lifeform

What a foul language... Wow..