That's an odd habit

Maybe he's been using that mouthwash for years..

Haha more like a disgusting habit. Stop sharing with your roommate!

Saves a lot of money ^

Anything that belongs in the bathroom should not be shared. Unless its hair products or body wash.

It's called recycling!

Just get new mouthwash and get over it, you've probably done worse things without knowing it.

25 - but I share a bath, and that's in a bathroom

50- I hope your roommate pees in there

At least the roommate saves money.

Least he doesn't swallow! And Becca, I feel like you've had your own issues in the bathroom... Care to share with FML?

One question... It never struck you as odd that one bottle of mouthwash never ran out?

He's conserving money! OP won't be buying any more mouthwash for a couple of years...

Rinse mouth with mouth wash, spits back dirty wash into bottle, bacteria dies in bottle, ????, profit. Sarcasm off//. That's nasty bruh

A penny saved is a penny earned..

I wonder what else he spits.

Yikes... I don't want to know that answer...

Cum guzzler!

I personally prefer to swallow.

Added protein.

That's added protein.

Thanks for the nutrition fact...

31 I frkin love u, made my day

Never share anything with your roommate again.

Hey, it's just the three Rs.
Reduce- Reduce the amount of mouthwash needed to purchase
Reuse- Reuse the mouthwash
Recycle- Recycle the mouthwash for future use

Yuck

Your roomate is an ass.

Lol

Nerd alert here, but what is that chemical structure in this person's profile pic? Also to the op that story made me cringe in disgust.

162- it's adenosine triphosphate (ATP); sometime referred to in laymen's terms as the energy currency of the cell, though it has other functions as well.

just a little diluted, but still works! you will still have fresh breath before you date with the big girl

As long as it isn't a communal bottle of mouthwash, you're probably fine.

If it is, WHY THE FUCK ARE YOU SHARING MOUTHWASH?

They made a spit pact now.

Trust him. He's a doctor.

Hey, they've got a special thing going Doc.

That's just gross.

Real men swallow.

That's why I also swallow! Lol.

Swallowing mouthwash isn't good for you... Good job not picking up on his sarcasm.

That's really bad and why the ef people think you deserve that.

In here, There'll always be trolls that say that, no exceptions, trust me, I've seen completely tragic fmls and ppl still say it

Tbh op deserves it simply cause that's something u prolly shouldn't share with someone considering most ppl swig straight from the bottle and obviously one douche spits back

Reduce, reuse, recycle.

For a green world, and even greener teeth

I don't think that applies here...

Couldn't you tell it didn't look right?

The floating popcorn kernels should have given it away.

He might just be a little misguided. Some people have little stupid things that they've done since childhood and they don't really think of it and don't realise if they did something odd.