Smeet is the term commonly used for Irken children and infants.

It is assumed all modern smeets (with a notable, but short-lived exception) are created underground, in large unnamed facilities on their homeworld of Irk.the episode "Parent Teacher Night" , such a facility is seen in a flashback. Many capsules with a holographic face are inset in a wall, and upon sufficient maturity of the smeet inside, the face turns green and resembles a smile. Then, a machine called "Mr. Plug" unscrews the cap