My favorite is 'hard tellin, not knowing' but I don't know how regional it is.
But, in VT We...
Drink soda, not pop
eat subs not grinders
eat creemees not soft serve
and, in the winter, when the snow is fresh on the roads and we got a new pair of snow mobile boots we grab onto someones bumper and go skitching. (it does get to be a tab bit nippley there in the winter)
The state bird is the jeezum crow (not really actually it's the hermit thrush but...)
Course, now I live in northern california and WE think that stuff is hella whack.
And I used to live in boston where we thought all that stuff was wicked retahhded