Git Surfing means: It is similar to joyriding and carjacking but you hijack a person rather than a vehicle. Chris Morris invented the term for Brass Eye’s ‘Crime’ episode. This was an extremely popular sport in Coswick, a fictional crime-ridden town. Git surfers creep up on victims and leap onto their backs, causing them to race at “terrifying legs speeds”. (in Community Dictionary, added by Abel Schroeder)