There are two more days before Saturday’s Grub Street Food Festival. Yesterday we told you what everyone would be serving; today we’re upping the ante and giving away lunch for four people from Luke’s Lobster. It’s simple: Just email and tell us your all-time favorite lobster experience by two o’clock tomorrow afternoon. (And try to keep it on the short side, okay?) We’ll sort through, pick our favorite and get you set up to claim your poached, celery-salt-topped winnings at the festival. Easy, right?