Ha Ha Ha! Yes! Straw/Hay! It's the country bumpkins who chew straw (and exactly like all of those Americans YOU have just insulted)!!!!
A pastie is a snack which was "invented" by wives for their coal miner husbands years ago, made out of pastry with one half stuffed with a savoury filling (say corned beef etc) and the other was stuffed with a sweet filling, such as apple etc - so you had your meal and dessert all in one, small package.
Things have rolled on now though, and pasties are one flavour only (and savoury) - there's loads of fillings and the most famous one of all is a cornish pastie (from Cornwall).
As for getting you into trouble - when Bernie and I are banned soon, you'll be left to cause the mayhem alone