From Nookipedia, the Animal Crossing wiki
Club LOL (クラブ シショー Kurabu Shishou), stylized as Club 101 (Club 444), is a new building in Animal Crossing: New Leaf. It is run by Dr. Shrunk, who has retired as a comedian and now runs the club by himself.
To unlock Club LOL, the player needs to have upgraded Timmy and Tommy's store to T&T Mart or higher and must have a 100% approval rating. Once the process is completed, Dr. Shrunk will appear outside of the player's home the next day and will ask the player to obtain six signatures from villagers in support of opening a new live venue. Once the signatures have been obtained, the player must go back to Dr. Shrunk, who will be found on Main Street, and return the signature sheet to him. The club will then open after five days.
Dr. Shrunk's Jokes
Similar to The Marquee in City Folk, players can visit the club and learn new emotions from Dr. Shrunk. To do so, the player must visit Club LOL before 8:00 PM and give Shrunk a snack, such as a piece of fruit. Shrunk will then go on stage and tell the player one of his jokes; afterwards, the corresponding emotion will be added to the player's joke book for later use. Shrunk will only teach the player one new emotion per day. However, the player may now have every emotion in their possession at once due to the Joke Book's mechanics.
During this time, when K.K. Slider is not performing, the player can go on stage and swap the gyroids.
Unlike previous games, where he performed at The Roost, K.K. Slider now performs nightly at Club LOL after 8:00 PM. On Saturday nights, he performs with his guitar, and he will give the player an album containing a version of the song he played. He will also take the player's song requests.
On other nights, K.K. performs as Club LOL's DJ. As a DJ, most of his music is electronic and resembles the genre of electronic music. This music tends to be remixed versions of his songs or other songs from NES games. When playing remixes of his own songs, the screen behind him will flash the album art. He will occasionally play the town tune, flash the TPC photo of the mayor, and display the town flag on the screen. When the player visits Club LOL on these nights, they can dance to the music using the D-Pad, and the screen can display the player's face.
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