I can't believe my oldest, Buddy, is 4 years old! Of course, like most four-year-old boys, he loves superheroes, so this year he requested an Avengers cake. After searching around on Pinterest, I decided that a Hulk cake would be the easiest Avenger to create in a cake design. I know, that's not a very good reason to choose your son's birthday cake, but I justified it by telling myself that I have a 5-month-old baby, so I don't need to spend hours on a cake. Last year, Buddy requested a…