Robbo stated that Banksy was introduced to him for the first time in the 1990s, commenting: "I was at a place called the Dragon Bar on Old Street. I was introduced to a couple of guys who were like 'Whoa it's nice to meet you!' When I was introduced to Banksy, I went 'Oh yeah I've heard of you mate, how you doing?' and he went 'Well I've never heard of you' ... he dismissed me as a nobody, as nothing. So with that I slapped him and went 'Oh what you ain't heard of me? You won't forget me now will you?' And with that he picked up his glasses and ran off."
Yeah, can't really claim Banksy started this one. Robbo, according to himself, was an utter dick.