Fans of The National, Bob’s Burgers and, well, gravy, you are in for a treat: The Fox comedy has animated the Brooklyn indie rockers singing “Sailors in Your Mouth,” the wistful ode to the savory sauce that was heard in Sunday’s Thanksgiving episode. That wasn’t the first time that the band and Bob’s Burgers bonded: The National contributed a rendition of “Kill Your Turkey” to last year’s Thanksgiving episode, and Bob’s Burgers writer Scott Jacobson directed the video for The National’s “Conversation 16,” which stars… Bob’s voice actor Kristen Schaal.