Mongoose glitch

In Forge mode on any level, grab a Mongoose and take it close to an invisible barrier. Have someone get on and then a second person get on passenger. Have the driver get off but the passenger stay on. Have another person go into Forge mode, pick up the Mongoose, and by using Right and the Left stick, push the Mongoose outside of the map. The passenger can then get off, and he will be outside of the map. As one of the simpler methods to get outside a map, it is the most common means of exploration outside the boundaries.