I thought this had to be some strange Texan thing, but I saw these small restaurant chains appear in Louisiana, so that ruled out that. Whataburger must get it's name for people saying "What a burger!" A regular kids' burger is the equivalent to a McDonald's or Burger King adult meal!
The restaurant has large hamburger patties. I must say, I was full off of a kid's meal and I'm known to order a McDonald's #2, no onions. This is a place I'd just bring a lot of people to come see because they wouldn't believe it. The movie where Cedric the Entertainer and Lil' Bow Wow go to a family reunion and stop at a restaurant with these HUGE hamburgers comes to mind.