http://www.bbc.co.uk/news/uk-england-21410565 So, this 37-year-old pub landlord reckons that despite having been stabbed when set upon without warning he then "fought off four attackers" using Aikido he learned as a teenager "without dropping his fish and chips...which he managed to keep in one hand the whole time without dropping anything." Unfortunately there were no witnesses.
I believe the guy...its happened to me on a regular basis since the druggies moved nearby......Black Belt in Origami though....and yes I do warn them first
I'm no martial arts expert but I think if four people were to attack me and their opening gambit was to stab me with a screwdriver then I'd probably weigh it up and decide that having another hand with which to defend myself was worth putting my chips down for.