I learnt most of my Japanese from 60 and over students who refused to let me speak English so I took full advanatge and at the end of each day, my leg was plasteered with Japanese!
I also used to use the young department store girls a lot. Two words spring to mind. 'Bucketsu' and 'Daicon'. The Daicon was one of the funnier occassions when the young girl in the short skirt held it up sky high
