knowles limit
a scientific phenomenon, often observed in restaurants, but can occur anywhere food is available. It is described as the point in time where the conversation or level of interest has fallen low enough that participants begin to mix random foods together. Often, the Knowles Limit is used as an indication that the party is dead and it is time to move on.
When a person mixes their meatloaf with a glass of milk, they have reached the Knowles Limit