Another rainy day and the gang just can't bear another one of Lars' "Stand-up" routine at lunch time. Noam and Thera alter the heating system to cause a "Snow Day" inside. Lars is terified that the family curse of the Yeti would come true. The gang try to help Lars conquer his fears only to find out Yeti are real and are the best hecklers in the world and take it out on Lars. Les and Noam work on removing the snow and ice while Lars challenges the Yeti to a heckle-off and wins just as the 'snow day' turns into 'water park day'.