What Happens on Earth

Are we alone in the universe? That really is the big question, isn't it? Are the little green men out there, hitchhiking from planet to planet across the vast emptiness of the cosmos? And, more importantly, what will they do when they find us? Will their first reaction be to vaporise us with death rays, enslave us as pets, or just subject us all to a thorough probing?
Don't worry, it turns out they're just like you. Given the choice, they'd rather just chill out and have a few beers.
So, why don't you join us, dear reader, as we take a fabulous trip across the stars to the universe's hottest new holiday destination. It might be a bit dirty, hence the name, but don't be fooled, this place really has everything; gambling; nematodes; cowboy hats; two unwitting humans who find themselves caught up in an extra-terrestrial stag party ... and while you are here, there is only one rule.
What happens on Earth, stays on Earth.