Sitting at a street cafe in Corfu, a young lad dived under the table to 'shine' my shoes forabout 10 seconds, and then demanded 1000 drachma (about £6 at the time IIRC). I hadn't asked him to, and he did it before I could stop him, but I decided it was safer to pay up than argue, then find out his dad is the copper across the road or something.