Gross Alert: My Oldest and I were talking about making a fun cake. We had so much fun making the creeper cake for his birthday, and I wanted to make a cake with him for no reason other than to spend time with him. So, what cake does he decide he wants to make... a toilet cake. Yes, you read it right. He wanted to make a toilet cake with me. Instead of say "no way, that's gross," I decided to do it with him and have fun in the process. First we baked two cakes. One cake we baked in 4…