Haven't had enough free food (don't forget, IHOP has a free short stack of pancakes offer today for its National Pancake Day Celebration)?
Quiznos is offering 1,000,000 coupons for a free submarine sandwich. Several friends have already downloaded and used them. You need to fill out a brief online form and they'll email the coupon to you. A word of warning: they sometimes send the coupon to your spam folder, so you may need to look there for it (and a few people had to enter it multiple times because the system was fickle).
But a free sub is a free sub, so if you're motivated, keep trying!