Brainy invites all the Smurfs to his party, but throws them out when they don't follow his instructions.
Did You Know?
This episode seems to establish that the actual age of the average male adult Smurf (not counting Papa Smurf) is around 150 years old. However, Brainy's Smarty Party rule that a Smurf must be 150 years old to attend actually considers the Smurf's physical age and not his or her actual chronological age. The male Smurflings, though only physically fifty years old, are still chronologically 150 years old (due in part to a de-aging accident in "The Smurflings"), whereas Smurfette, though physically around the same age as her fellow adult male Smurfs, is chronologically only about a few years old, being a magically-created Smurf instead of a naturally-born one. See more