Never, ever come home drunk! It is a nightmare to deal with the hungover. But because people do like to drink, they sometimes come home unimaginably annoying and reduced to the mindset of a tantrum-throwing toddler. Here's what you can expect.

1. Be prepared for belligerence.

Scientist found that alcohol consumption leads to more aggression. Your drunk friends will probably be a little indignant, to say the least.

2. They will claim to be sober.

Here's the conversation: "I'm not drunk." "Yes, you are." "$#@* you! I'm not!" "Yes, you are! Now, stop drinking!" "@$$-hole! I said I'm not."

3. Major Mood swings!

One minute they hate your face. The next you are utterly perfect, and nothing you say or do can be wrong! Then it is "$#@* you!" all over again.

4. Hydration Helps

Dehydration causes hangovers. So, make sure your drunk friend drinks up. Unless, of course, they really annoyed you. In which case hide the water and let the hangover teach them a lesson they won't soon forget!

5. Prevent Regret

Alcohol causes a decrease in inhibition and, as a result, an increase in poor judgement. They will want to drunk dial everyone and have pointless arguments. Just keep their keys and phone in a safe place they can't find.

6. Revenge

Naturally you are annoyed beyond annoyed at your friend for making you play babysitter. Their hangover will do most of the work, but still it does not seem enough for the hell you went through. Well, your friend is completely hammered, either passed out or ranting over heaven knows what. They look so vulnerable and pathetic. May as well Snapchat embarrassing videos of them so you have at least one thing to laugh at.