Har Har Tharsdays is a block during the Nood Era. Every Thursday night, new episodes of a comedy series would air. Shows included are The Marvelous Misadventures of Flapjack, Johnny Test , Chowder, 6teen, and Total Drama Island. It launched June 5, 2008 and ended April 8, 2010. It was later replaced by a similar block that aired comedy shows on Monday instead of Thursday. In the begining of the block, it also aired episodes of My Gym Partner's a Money and George of the Jungle, but due both shows ending at the time of the new block, they only aired reruns.
- The reason the block ended was because of Adventure Time. Because of the shows massive popularity on the first episode, Cartoon Network decided to air Adventure Time and the other shows on Monday.
- K'nuckles, of the The Marvelous Misadventures of Flapjack series, mentioned the block in the episode "Whale Times". At the end of the episode he said in a laughable manner, "Har Har Tharsdays!"