I do that wall-becomes-floor thing also. I once got really into it and grabbed onto a desk and braced myself before realizing what I was doing. At least I never grabbed onto any people. 
Also, I have a secret identity with the initials V.J.F. who is really smart and can do everything perfectly. This has been going on long enough that I sometimes really think I am this other person when I’m just waking up.
Whenever I’m in a car, driving or riding, I mentally pretend that it’s a race and I’m always in the lead. If someone passes me, they chose to quit the race, while anyone I pass is simply a latecomer.
I don’t even know when I started doing it.
I do this, except the person is on a motorbike. Makes for more spectacular jumps and works great on cross-country train journeys. Every so often I make him slam a tree head on, just for the fun of it.
But this is normal. Unlike the rest of you guys who are plainly certifiable lunatics. 
When I’m a passenger in a car, I part my teeth slightly every time a telephone pole or other significantly jutting object goes by, then close it when the ground is ‘flat’ again. Almost in an “I am eating this telephone pole!” motion. It’s become automatic and half the time I don’t even notice myself doing it.
I’ve also framed my life as a film or narrative ever since childhood. It used to be simple, like appending “s/he said” mentally every time someone talked to me, but now I take note of lighting changes, dramatic irony, everything. I think of myself in the third person (don’t speak that way, though, because scablet finds that fucking annoying). At night, I recite the day’s events in novella form.
It’s strange how many people I’ve met who share that quirk. I always felt it was terribly self-absorbed of me.
Yeah, I do this, too. I remember doing it as a littler kid as well. My person can do almost anything, completely defying gravity. It’s really fun…
heheh
If I’m walking on a tiled floor or sidewalk, I never step on the cracks. I think I’m subconciously terrified of breaking my mother’s back…
Man, I had no idea that so many people had car runners, too! This is pretty damn cool. And yeah, my jumping person could jump abnormally far, too. The only time she (usually a chick) needed help was when you had the 8 lane roads or so. No problems otherwise.
I’ve also done the bouncing laser beam thing. It’s sort of related to my floating/bouncing person in the room thing I mentioned in my first post in this thread.
Now, what I’m wondering is: How come we do this? Is it rather common, or unusual? The sticking factor is how you think it’s really weird, so you never really talk about it to anyone (which gives the appearance that not many people do things like this). So I wonder if it’s rare or common, and why we do these things…
I don’t have a car runner, but when I am in a car as a passenger I unconciously suck my tummy in every time I pass a street light. I have no idea why I do this, but it makes for good exercise.
My SO counts everything in nines. Nine letters, nine bricks, nine steps. I think it’s a cute quirk.
I TAP!!!
I dont know why I do this but I just tap. Like if i’m at a desk, i put my middle finger on top and smack the bottom with my pointer and ring finger, moving them up and down to hit the skin/nail and make different notes. I can do it insanely fast now and I just do it all the time im sitting at a desk
Lordy, this is weird. My car runner is on a four-wheeler. I have no idea why.
When I am reading, I breathe at periods. I discovered this when I tried to read long posts by people who used ellipsis ( . . .) instead of periods. I’d be light headed by the end.
I can’t go into a dark room. I have to reach into the doorway to flick on the light before I cross the threshold. If the switch isn’t near the door, I have to close my eyes in order to enter the room.
I count things in 7s, then 13s, then 19s, so I can tap evenly from index finger to pinky and back. The songs that get stuck in my head the most have beats that go in patterns that let me tap my fingers out full circle.
Okay, I’ve never admitted this to anyone, but here goes -
When I was a little kid on road trips, I used to just stare blankly out the window. On one trip, I developed the habit of blinking whenever our car was exactly halfway between the reflector poles by the sides of the highway. This mushroomed into blinking when our car was halfway between two other things, like oncoming traffic in the opposite lane.
There was a period of a couple of years when I couldn’t not do this whenever I was in the car. Now I’ve gotten over that compulsion…
but I still occasionally find myself blinking whenever I’m halfway between those reflector things by the side of the highway.
Count me in as a member of the Crazy Car Jumper’s Club. When I was little, I spent a lot of the time in the car going to visit relatives, and the Car Jumper was one of the many things I did to keep myself entertained. My guy was about a foot tall and always ran along the shoulder of the road. No motorcycles or four-wheelers, but he was very destructive – always ripping up reflector poles and throwing them at other cars.
Well I can’t say I’ve never talked about this before, because it’s kinda obvious. I rock. Literally. Any time I’m on the computer or in the car.When I’m not rocking I’m tapping my foot, or jiggling my leg.
When I’m looking at a tile floor, half the tiles are good and half are bad. Good tiles never touch each other directly; rather, they touch at corners.
If I’m looking at a tiled surface that I see on a regular basis, I can tell whether the tile I’m looking at is good or bad. The two types almost look different.
I tell myself stories before I go to bed.
Also, I dance at my place of employment to children’s music when nobody is looking.
When I am driving down the road I imagine how much faster I would seem to be traveling if my car and I were much smaller. If I were, say, 10% of my actual size, then going 60 miles per hour would seem like going 600 mph.
I type in my head a lot. I learned typing in high school, and have typed almost everyday for the past 20 years. Sometimes when I talk, I type along in my head. Occasionally I’ll type on my lap with my fingers, too.
I’m a gazer. It started in my school days, I think, during boring classes. I fix my gaze on something in the middle distance and just stare at it. Sooner or later, if undisturbed, this produces the optical illusion that the object my gaze is fixed on is coming closer and closer. At a given point, the object suddenly appears to be right in front of my face. Closing my eyes dispells the illusion, but one or two blinks doesn’t.
When I’m having trouble getting to sleep, I watch for phosphenes to form in my field of vision, if you can call your closed eyelids a field of vision. When they appear, which isn’t always, I can hear them. They seem to make low-pitched rythmic sounds as they appear and fade. Weird.