1

There will be short, dark hairs in the sink.

2

You'll find at least a little bit of pee on the toilet seat rim.

3

His stuff will either smell like the good "man smell"...

4

...Or it will smell like the bad "man smell."

5

You'll hear all sorts of bizarre noises coming from the bathroom.

6

You'll eventually find him with his hand casually hanging out in his pants.

7

Their pooping time is sacred time.

8

There will be nail clippings, even if he does his best to clean them up.

9

Lone socks will be found roaming the house.

10

You'll probably catch him listening to some less-than-manly music at some point.

11

Tiny, curly hairs will find their way onto everything you love.

12

They will be lacking something you had no idea people could live without.

13

They'll only wear a shirt 50-75% of the time.

14

When they get a cold, their life is over.

15

They spend an incredible amount of time thinking about literally nothing.

16

They absolutely require their alone time.

17

They can and will eat more than you'd have ever thought possible.

18

No matter how much they respect women or other men, you're destined to accidentally discover something weird that they're into.

19

If they're into video games, they're going to be VERY into video games.

20

Sometimes, you'll wonder why you ever moved in with the guy...

21

...But ultimately, dudeifying your home is completely worth it.