Get your own Portal GunPortal is a 2007 single-player first-person puzzle-platform video game developed and published by Valve Corporation.
The game primarily comprises a series of puzzles that must be solved by teleporting the player’s character and simple objects using the “the handheld portal device” – a device that can create inter-spatial portals between two flat planes.
The player-character, Chell, is challenged by an artificial intelligence named GLaDOS (Genetic Lifeform and Disk Operating System) to complete each puzzle in the Aperture Science Enrichment Center using the portal gun with the promise of receiving cake when all the puzzles are completed
Now you can have your own portal gun
Watch this College Humor video to see what one can do with a portal gun. It can really make your life easier