Pizza disappointment

I have just been round to Granny's to arrange an appointment for tomorrow's pizza showdown (this will be posted later). We discussed why and how Sicilian Pizza base is so different from other regions'.

'Pah!' She said, 'they've started introducing that paper thin base for all those diet fanatics'. 'Eat that stuff and you'll go hungry....' Then I discovered a new hand gesture. Wave your hand under chin and bring it up repeatedly (signal= vomit?) 'That's what we think of northern pizza'.