Food nipple

The food nipple is an invention of the Covenant for feeding Unggoy.

Background
The Unggoy, having such a lowly place in Covenant society, lead an existence of servitude; feeding at these nipples is one of their very few real pleasures. Many Unggoy do not enjoy feeding from food nipples: however, they seem to put up with it because it is their main source of nutrition. They appear as a long tube with a nipple at one end to consume from. They contain a blue, bubbling paste that the Unggoy find unappetizing but nutritious. McKay describes the smell as "old socks wrapped in rotting cheese".

They are described as free standing food-dispensers, with long tubes and receptacles that end in a nipple that the Unggoy use to distribute the food into their gullet.

Trivia

 * The food nipple is mentioned in the games on multiple occasions:
 * The Thirsty Grunt in Halo: Combat Evolved says "Good thing the food nipple's waiting for me back at the star ship, 'cause man, have I worked up a big, Grunty, Thirst!"
 * In Halo 2 on the level The Oracle, after the Grunt says he has a bad feeling about something, another Grunt says: "You ALWAYS have bad feeling! You had bad feeling about morning food nipple!"
 * The Grunt who mentions Flipyap in Halo 3 also mentions that they "went to Nipple Academy" together.
 * Also in Halo 3, if IWHBYD is turned on, a Grunt may say: "He flees! Thank the nipple...".

List of appearances

 * Halo: The Fall of Reach
 * Halo: Combat Evolved
 * Halo: The Flood
 * Halo: First Strike
 * Halo 2
 * Halo Graphic Novel
 * Halo: Ghosts of Onyx
 * Halo: Uprising
 * Halo 3
 * Halo: Contact Harvest
 * Halo: The Cole Protocol
 * Halo: Evolutions - Essential Tales of the Halo Universe
 * Halo: Combat Evolved Anniversary
 * Halo 2: Anniversary
 * Halo 5: Guardians
 * Halo Wars 2