Peeps is the term used by Hoobs to refer to humans. Peeps live on what the Hoobs call the Peep Planet. Young Peeps (children) are known as "Tiddlypeeps." Baby Peeps are called "Squigglytiddlepeep." Elderly Peeps are known as "Wrinkly Peeps."

Hoobs are willing to speak to Tiddlypeeps (and occasionally Wrinkly Peeps), but they rarely speak to the adult Peeps. This is not only because the Hoobs become too nervous around adults, but because the adults don't appreciate or understand the Hoobs. The Tiddlypeeps ultimately provide the Hoobs with all the essential information they need to answer the question of the day.