When you drive down I-95 on your way out of Maine, the rest area has a sign advertising that they have lobsters for sale.
What’s funny is that you don’t see that sign on your into Maine.
If you’re driving north on I-95, you don’t need to buy lobsters. You’re going to Maine and there will be plenty. But if you’re driving south, you’re leaving Maine, and what better souvenir to take home than a two clawed crustacean?