Describes the experience of somebody who eats little to nothing during the day, but becomes ravenously hungry past 9 PM. Oftentimes the hunger is satisfied with an odd combination scavenged food from the fridge or just around the house so that it is not necessary to assemble an entire meal.
Example:
Brenda: "Why are you eating a steak sandwich and three tangerines.. it's 12:47 PM."
Milton: "I'm getting my nightly hungers, BRENDA."