Having a real life gun from the game Portal would be amazing. It would cut commuting times, help move bulky furniture and revolutionise the sporting industry. It would also lead to messy friendship-ending situations like this.
Aside from the amazing special effects, the best thing about this clip is the sheer believability of the situation. All it takes is one guy to be a douche with a Portal gun, then next thing you know someone’s flying through the air crashing into fences.