The Fraggle Five recite the oath.

The Solemn Fraggle Oath is used for situations with serious significance to the Fraggles. The words of the oath are "Weeba weeba, waffa waffa, garpox gumbage, whoopee!", while they hop in a circle.

When someone calls for the oath, others are required to swear, and only the Fraggle who called for the oath in the first place can release other Fraggles from it. The words to release Fraggles from the oath are "Weeba, Waffa, Wingo!"

Episodes in which the oath is used include:

  • "Boober's Dream": Sidebottom makes Wembley swear that he will come back and visit with his other friends; later, Boober makes his friends swear that they won't promise such a thing to Sidebottom again. The oath is said yet again as Sidebottom promises Boober that he will not be too much fun in front of Boober's friends in the future.
  • "No Fraggle Is An Island": When Boober becomes frustrated with how crowded the Rock is, the Fraggles take an oath to move away so that Boober can have all the space he needs.