I'll have to second the Royal Red Robin. The egg on a burger is full of grease and win.
Yeah, I thought the 'special' lemonade was a little perverted sounding too... Hey, if nothing else you get free baskets of fries if you run low. There's also a bar there so you can take your 7 or 8 year old there to eat and play at the mini arcade and have a few drinks to get a good buzz.