Gangs of Eastern Europeans are stealing chewing gum from supermarkets because it can be used as currency in their home countries.
Packs are being stolen in bulk before taking it home where it has a tangible value as currency - particularly in Romania where it often given as change in shops.
...
http://www.telegraph.co.uk/news/ukn...europeans-steal-chewing-gum-for-currency.html
:shrug:
This is not "tradition".