Yes it's been a long time! Still a fun, impromptu party trick... I made it work, although it caught me off guard! We don't have Tescos here. I'll be on the look-out for wide mouthed cans now.
By the way, @Lady Of Mystery, I just noticed you joined this forum a mere 17 days after I did-- back in 2006. Since then you've posted substantially more than I have, though
David