In the same vein as Legless below
When out an about with a friend, in/up/down(delete as applicable) town, in supermarkets etc, speak in a pseudo-foreign language. Just make up gibberish. Try not to sound too oriental, because it's not convincing enough. Go for an east European language.

Try to sound like a cross between Papa Lazarou from League of Gentlemen and the Channel 9 announcers from The Fast Show.

But then do it in a broad Yorkshire accent. Me and my teenage lad do it when in Tesco. It attracts funny looks from people
(sandettie light vessel automatic My dog has no dictionary, how does it spell awful?, Sun 17 May 2009, 14:44, Reply)

2ndmrsblaireau69 is Polish, so i have learned a fair few phrases...
and i'm gonna try this out...
( blaireau69.1 0.1 better than blaireau69, Sun 17 May 2009, 19:02, Reply)