Place it just after a sardine tin is revealed, as the setup for the joke, then follow it with Law and Order Dun Dun to turn the small food moment into a mock-serious reveal, and keep any reaction sound for the final beat.
About this sound
This is a short spoken clip from Golden Girls, lasting about three and a half seconds, in which a character mentions sardines in a deadpan, matter-of-fact way. It feels dryly funny and a little absurd, the kind of odd little line that lands because it comes out of nowhere. Taken from the classic television sitcom, it carries that warm, familiar show's humour.