The ol' bread-milk-toilet-paper trip.
In Maryland the pre-storm rushes on the grocery storms ammount to near-panic and is the stuff of legend and jokes. In fact, the state even had a scratch-off lottery game based on bread, milk, and toilet paper. Silly Murl-lunders.
In the past, folks around here have been pretty casual about the pre-storm trip, since they usually did it three or four times during the winter. This year, though, I expect more urgency since we haven't really had ANY storms yet.