: Fans noted that the board effectively transforms from a simple menu display into a "crime-solving burger board" to help find Bob.
The you are referring to is the crime-solving burger board from the Bob's Burgers episode World Wharf II: The Wharfening (Season 4, Episode 22). The Crime-Solving Burger Board [S4E22] Flush with Power
: This episode is the conclusion of a two-part finale where Felix Fischoeder attempts to kill both Bob and his brother Calvin to sell Wonder Wharf . : Fans noted that the board effectively transforms
: Louise Belcher leads the effort to map out all possible meanings of the texts to pinpoint their father's location. Episode Context [S4E22] Flush with Power