The Honeymoon is Over
Peanut butter and mayonaisse on pumpernickel.
How does that even happen on accident? It does, however, explain the telephone call from bonus son #2. It seems that he was making pasta sauce and tried to "thicken it up" with some flour when it got lumpy. Now I know your answer is the same as mine, why would one put flour into a tomato sauce? To his credit, it wasn't tomato sauce - it was cream of chicken soup with tabasco sauce and chili powder.
For the pasta.