So I recently binged "Vikings" on Hulu; it's a History Channel show, so you can expect the historical accuracy to be a close approximation of the actual Viking culture, even if it's heavily fictionalized. Now, this is a list of things to pay attention to as you move through the series, because they actually have a good bit of significance to the story line, culture, and/or a specific character's traits.

I want turn this show into a lengthy drinking game. However, unless you're buckling down for a seven-hour marathon with your friends, don't expect to get through more than a beer and a half (maybe two) an episode if you dare to take up the challenge. When you see any of the following entries on this list, grab your nearest alcoholic beverage (be it beer or a mixed drink) and take a swig. That's it!

I would say there's an EXTREME mode: Take a shot every time you see any of the following entries, but I fear for your liver, and no one wants to see you in the hospital.

So grab a couple friends, drink, and marathon it up. You'll be yelling "Valhalla" before you know it!

1. Ravens.

Every time a Raven appears, some kind of knowledge is imparted to the character who sees it.

2. Ragnar beats Rollo.

Living in your younger Brother's shadow can't be easy.

3. Thunderstorms.

Signifies Thor's displeasure with the Northmen.

4. Ragnar Lothbrok fathers a new son.

Just count them. I swear it seems like a never-ending stream!

5. A character rises in rank.

Someone earns or is gifted the title Earl/Jarl, King, Duke, Count, etc.

6. Vikings get new tattoos.

As the Viking warriors win battles, their tattoo collections grow.

7. Ragnar does the impossible.

Who'd have thought to lift the boats over a cliff?!

8. A character second-guesses their religion.

How many times will Aethelstan don his monk's robes?

9. Time-jumps.

Unexplained, just new actors responding to old names... generally timed at the end of the season... or beginning.

10. Visions from the god(s).

Of which there are many.

11. Floki betrays someone in the name of the gods.

We get it Floki, your passion is for the Gods alone, and maybe Helga.

12. An alliance is broken.

These pacts are as stable as sandcastles.

13. The Northmen sail west.

It's simply never been done before! Right. About that...

14. A character licks the seer's hand.

Yep, just as weird and gross as it looks. Oddly enough, you get used to it.

15. A character cheats on their spouse.

Fidelity isn't quite so important, apparently.

Drink up, everyone.