As a guy who runs his own burger joint, food is very important to Bob Belcher, and likewise, so is Thanksgiving. In the episode "An Indecent Thanksgiving Proposal," while the rest of the family is occupied at the home of landlord Mr. Fischoeder, posing as his relatives, Bob is left all by his lonesome to prepare Turkey Day dinner, and he liberally drinks from a bottle of absinthe, a strong alcoholic spirit said to have hallucinogenic properties. 

Indeed, a giddy, booze-addled Bob starts to believe that the headless turkey he's preparing is not only real, but a magical and delightful talking friend named Lance. Reality slips away for Bob as he descends into a hallucinatory fantasy sequence. With his family gathered around for a Thanksgiving toast, Lance emerges from the oven and grows to massive size. Suddenly, a grinning Bob and the other Belchers are outside, where Lance pumps his black umbrella, propelling a giant tower of fall vegetables and Thanksgiving treats out of the ground and into the sky. The Belchers then all grab hold of the turkey, who uses his magical umbrella to soar them to the top of the tower, where they all sit on a carrot leaf. That's when Bob asks, "This is weird, right?" 

Weird, yes, but not without precedent. It's a faithful re-creation of a scene in the Studio Ghibli classic My Neighbor Totoro, where a friendly monster uses his black umbrella to grow a grove of giant trees.