Similar to goosebumps, but only experienced when eating incredibly delicious and scrumptious food. Usually paired with an uncontrollable feeling of euphoria and a gigantic smile on one's face.
Peter: (already experiencing foodbumps)
"Matt, the potatoes..."
Matt: (Eats caramelized garlic-onion mashed potatoes, gets foodbumps)
"... Holy shit, the potatoes."