Cast has funraiser event of some kind and one member of the cast jokes around and says "Yeah *insert celebrity name here* will be there, we been friends since grade school". Everybody doesn't believe him... except the loud mouth gossip who does then tells EVERYONE in 10 minutes. Now a million people will show up to the funraiser and now the cast has to go to celebrity and convince him/her to show up or the cast will: get bankrupted, get deported, lose all credibility, the person they had a crush on will hate them forever or etc.