If you had a portal gun, what would you do with it? I would shoot one on the ceiling above my bed, and at the end of school, I shoot the other on the floor, and jump straight into bed. And also, I would go to my enemy's house and shoot a portal in the toilet, and on the ceiling straight above.

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I would use the portal gun from my house to the nearest McDonalds so i can eat all the burgers i want.

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Formerly known as nick 139
My YouTube channel

Well it would probably be useless because the material that portal surfaces are made of can be found (almost) nowhere outside of Aperture, but if I either had a constant supply of conversion gel or if I had an upgraded version that could shoot portals on any surface:
-Shoot a portal at the bottom of a playground slide and another one at the top and then slide down so I shoot straight up in the air. Assuming I also had long fall boots too, the fall wouldn't be very dangerous. If there was a wall perpendicular to the slide's entrance, I could slide down the slide over and over at a faster speed.
-Make money by providing people with an instant taxi service.
-Use it as a personal form of transport so I don't have to learn to drive or worry about polluting the air.

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Legacy custom music
A site where you can watch my YT videos AND be able to hit that dislike where your dislike will be visible to other people and not have to rely on a browser extension

I'd use it to warp people that annoy me onto that square of grass in front of my house.

...Or create a random portal to nowhere specific and throw things there when I'm bored.

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Usually inactive/procrastinating on a hack idea.

But in Mari0 you can shoot on almost every tile and an on every SMB tile. Even in Minecraft you can shoot on almost every tile.

Edit: Oh mean, I wish, I have Minecraft, then I can create maps with this (not so ported) mod.

Ontopic: In this more or less insany thread... I can't image what I can do to with a portal gun.