Knock Yourself Out...
From The Consumerist:
Free Grand Slammwiches At Denny's April 8th
If you bring a friend with you to Denny's April 8 between 6am and 2pm and order a Grand Slam, your friend will get a free Grand Slamwich. Not quite the same as their totally free breakfast promo after the Superbowl, but there's still free food involved. Besides, going to Denny's by yourself is a little depressing.
I have to admit that I really like the Grand Slamwich at Denny's. I am a sandwich nut in the first place but this one has it all. Scrambled eggs with sausage and bacon mixed in, slices of ham, cheese, and bread that has a light coating of maple syrup. See this link and scroll down to the specials part for a full description.
It's no more depressing than eating by yoourself at any other casual restaurant, really. Either you're ok with it or you're self-conscious about it.
The addition of mayo to this sandwich seems a little strange to me, especially with the maple-infused bread. It doesn't seem standard fare for a breakfast sandwich, but I can see how it could be a little dry for some.