The act of storing frozen goods in a freezer in order to maximize space, esp. when a large quantity of perishables must be stored in a smaller refrigeration unit.
Like the Nintendo
game from which the term was derived, Freezer Tertis
involves shifting and rotating boxes of frozen goods in order to fill any empty spaces.
Um, we're going to have to play Freezer Tetris if you want to fit all of this stuff in there.