ok so i was taking pics and this guy walked past (smoking of course) and then he came back and started talking to me and pointing and stuff and i am not 100% sure what we said to each other but the general gist of it was:

HIM:hey hows it going you like the graffiti

ME: i'm SORRY, WHAT DID YOU SAY????

HIM: this grafittis pretty bitchin, i did some of it you know

ME: YOU, have done... THIS? (struggling to think of the vocabulary i have learnt relating to illegal activities of public deffacing... and failing)

HIM: you are clearly insane and dont understand a word i'm saying- do you want a photo?

ME: (eyes light up in recognition) yes thankyou

(he stands in front of wall and makes some gang hand signal)

HIM: ok see you later

ME: thankyou mister man

end of scene