The exterior of the building resembles that of a Hawaiian hut. It has a large sign that reads the place's name lit up with neon lights. There are balloons next to the sign. A large wooden column sprouts on top of the building with a rabbit's head on top.
The interior has a pink wall, a robotic rabbit, arcade games, and a stage.
Role in series
It appears when Mr. Krabs wants to do something like the "young people." He then foolishly goes to SpongeBob and Patrick for fun, but their ideas for "fun" are more childish than expected.
They decide to go to Bunny Buns, embarrassing Mr. Krabs, who then angrily lashes out by flinging children off of him and destroying the animatronic rabbit, stating how silly he feels trying to be young.
"Old Man Patrick"
SpongeBob decides to show the elderly what it is like to be young again, mainly to revert Patrick, who has become an old man, back to his previous fun-loving state, so he takes them to Bunny Buns. All the elderly act amiss until SpongeBob soon also becomes so over worked that he becomes all wrinkly and old. He tries to walk and then declares he is "losing steam," falls on the ground, and steam shoots out of his holes. Said steam gets Patrick moist and takes out his dry wrinkles.
This place also appears in the Nicktoons Plug n' Play level "Kash Dash."