Nothing because I don't get crazy hallucinations without either large amounts of alcohol or drugs and I've never consumed either.
I recommend you stop playing Portal and go to bed or something.

Alcohol doesn't give you hallucinations on its own, by the way.

The only time I hallucinated was when I was slightly drunk, on a bike and it was minus 5 degrees C. I got paranoid as ♥♥♥♥ and my mind started deforming sounds into scary ♥♥♥♥.

But, like the others said, stop playing portal and go to bed.

Whenever I take showers, I hear... voices.

I think this proves that I am clinically insane.

The voices always sound like my mother. It always sounds like she's yelling my name like I'd gotten in trouble.
If I peek outside, nobody says anything happened.

... At least the voices aren't telling me to kill people.
Or are they?

Studies have shown that a significant number of otherwise completely mentally healthy people regularly hallucinate via any or many of their senses.

SrazyMLS, your avatar fits your hallusinations nisely.

I just occasionally misconstrue sounds as people calling my name, and that's less a hallucination and more the fact that many words sound similar to 'Matt'. Although, after watching movies, sometimes I get irrationally uneasy about something for like a week, though again, it isn't really a hallucination.

Another quality thread from Raven. Keep it up bud.

I've only really ever had a hallucination when I had the Flu. My bed transformed into a giant GPS.

Also, Crazy, that's Pareidolia. It comes in the form of visual or audible (Is that a word?) form, causing you to make sense of random stimlus. Like seeing a face in a cloud or hearing your name from a shower stream.
And since your brain is wired to prioritize your name through background noise the effect will probably be doubled.

I had the flu where i had a fever dream. I am quite sure that i was awake, and i saw this weird guy who walked in slowmotion and suddenly sped up at random intervals. He also looked like Nicholas Cage.

Once I was walking with some friends in a park and the temperature was like -10°C more or less, and we were freezing up badly. At some point we started talking randomness, or at least I heard they were saying random things (like Ohgeuhjn ajhfk grofsijt) and sometimes I just skipped parts of the conversation or parts while we were walking. It was like we were sitting on a bench and then I just skipped to the moment that we were standing near my friend's house.

It was wierd.

-10 Celcius is enough to make you hallucinate? Yeesh.
When I was a young kid, I had a fever dream and when my mom came into the room, her head had been replaced with that of a dinosaur. I think that's the last time I really hallucinated.

I've never hallucinated.
And -10 degrees Celsius is pretty much a warm winter here.

There, but here we don't have many cold temperatures, that is the coldest day I can remember.
Well, barely remember. I can't even remember what we were talking about that night.

This one time, I was at a friend's house, and we were playing xbox. I randomly stood up against a wall because literally everything was turning into a fractal. After about a minute, everything was a swirl of color. Then if I moved my head, it would reset and start over again. Oh, and we were both totally baked.

But usually I think I hear and see things that aren't there. Like sometimes I'm like "hey bro you hear that?" and nobody heard anything. Other times I swear that I see moving shadows or figures but they aren't actually there.