Alot of our favourite games are known to have very interesting but at times reality-reverting glitches and in-game errors that we all somehow manage to manipulate into something that we'd play around with for hours.
The GTA series are notorious for its in-game glitches. Famous examples include 'sinking' cars that get stuck in virtual concrete in the middle of the freeway, clipping-free walls and car doors, seizure-prone vehicles, and the famous 'transparent' ground.
Below is a youtube video that some dude compiled of the latest glitch found in GTA IV. Oh well, at least it looks like it could be fun for a few hours.
For those playing at home, the swingset is found in the Broker borough of Liberty City.