Tuna has saved my life so many times. Often I've been on a ramen or quesadilla diet due to extreme poverty, and sometimes you just have to mix it up. Throw a little bit of tuna in there for the protein. It's cheap and does the job. Too bad now it's all infected with mercury, so it'll be the death of me, despite keeping me alive for so many years. It's poetic really. I'm sure Shakespeare wrote something similar to it.
If there's any breeding ground for fishy ideas, it's pizza. It's just too easy to put something on pizza, especially if we're talking about a cheap frozen pizza. You won't catch me eating one of those without adding some of my own cheese to it. That's the secret to living a gourmet life on a poor-man's budget. That and stealing from your friends.