Species-wide holiday occurring every 17th of May and 17th of November by the Blarg. The event is apparently a competition between the Blarg to decide who has the worst odor and who is the most skilled in Hopscotch. The event is most likely observed only within the Solana Galaxy. The Semiannual Blarg Stink-Off and Hopscotch Competition was mentioned in the Ratchet & Clank 2010 Calendar.