Aliens Aliens

When people say space alien, I want to smack them.
Where else would aliens come from?
Turns out, there’s more aliens out there than just space aliens.
Dimensional aliens cross over from other dimensions to ours.
And time aliens come from the future.
But, yeah, we got invaded by the space variety.
Didn’t last long, though. Fools thought they could breathe our atmosphere.
Nope. Couldn’t. Troop carriers landed and they all suffocated.
They didn’t start with an aerial bombardment, which was bad strategy, but polite. So we let bygones be bygones. New friends.
In case time aliens attack, you know.