I did that to someone on here (roller83 I think) half midnight, I on my way home going thru epping forest and am following a red RST and recognise the plate on it, so when he stops I jump out and run up to window and bang on it. Kid's like 17 and he shits himself opens the window half an inch and says "er, what do you want" and I said "do you use the passionford bb?" he shits hiumself again and says "er, yes" so I explained I recognised the reg and he gives out the biggest sigh of relief you ever heard

Funny as fook!