Other people tell you of course.
Don't do bad mathematics while asleep!
That kind of stuff.

I remember a coworker telling me a story about how she used to mess with her daughter while she was sleep talking. Fun stuff.

Bad mathematics while asleep? Like murmuring 3 x 9 < 27?

You mean her daughter was sleep talking and the coworker was talking to her daughter?

Yeah kinda like that

Yeah. XD The daughter would wake up and know that her mom was messing with her.

I don't know how she knew, but she did.

Well, usually when I remember dreams I'm half asleep. And if someone started talking to me while half-asleep, I would remember. Actually, there might have been a time when someone said something to me while I was half-asleep and I included them in the plot of my dream-scape. Maybe it's like that?

Do you have any memorable dreams? I have a few, though I only remember one of them.

Maybe she appeared in her dream as an existence that normally shouldn't be there?

I wish I could remember more dreams. But most of them are abstract because of medication that I'm on...so a lot of times they are not very memorable.

I still remember this one time my husband was violently tossing and turning in his sleep. I was concerned so I tried to wake him up. He woke straight up and screamed. Scared the shit out of me.

lol, turns out he was battling a killer bunny in a nightmare.

I remember a couple of flash games where you are defending a bar or house from killer bunnies, those were pretty funny.

Ohh, maybe. Maybe she got added in as a character.

Medication? What medication do you need? My dreams always have some sort of plot, but it's weird.

My most memorable dream:
I'm walking on a road. The road is tan-brown and wide. It is a dirt-road. The floor is soft.
A girl and a boy are also on the road. I don't remember now, but I think they were walking in front of me. They are children. The girl has a blue dress, the boy I don't remember very well. The girl has yellow hair.
On the sides of the road are trees, or maybe tall bushes. The sky is blue with large patches of clouds in the sky. The patches do not block the sunlight.
I forget what the girl and the boy talk about. But at some point the girl or the boy runs ahead and drops their phone. I pick up a dark blue phone and shout at them, "Hey! You dropped your phone!" But they are gone.
Suddenly I am in front of a mansion. A cutscene plays. My head gives a background story about a blonde pony-tail girl at a highschool. The girl and a boy are friends. This cutscene is in cartoon-style by the way.
Anyway, the mansion is huge and the sky is dark. Everything is dark, but I know the mansion houses a big party. I know I'm invited.
I enter the mansion and everything is lit in a warm yellow light. There are people drinking beers and beer bottles turning into fountain hoses.
I think to myself: "This is like Alice in Wonderland" then I wake up.
...come to think of it, many of my dreams have to do with Alice in Wonderland.

Edit: I once had a nightmare about a rabbit also. It had to do with Alice in Wonderland as well xD

I have no reason to be afraid of a bunny. I doubt I would have a nightmare about them.

My cat is afraid of bunnies though. My brother-in-law had a bunny that was part cottontail. Whenever the bunny was loose, it would chase my cat. One time my cat got too close and he got bit!

Well, when I had the rabbit nightmare, I was in a little garden. There was a briar bush and I saw a brown bunny staring at me. So I looked at the bunny and thought, if it talks then maybe it can take me to wonderland. And it looked at me and spoke. I flipped out and woke up.

Poor kitty xD. In book series I read cats eat bunnies, but I guess cottontails are fiercer!

I seriously don't think my cat has killed anything other than a fly. And he's not really good at that either...

My moms dog he always tries to eat flies, it is quite funny to watch.

Hahaha, the book series I read is about cat tribes living in a forest. They get berated by housecats for being savage xD

Does the dog ever successfully get a fly?