Burger King has enlisted Rhett and Link as taste testers to promote its "Whopper Guarantee," Tubefilter reports. The deal places a fast-food brand inside Good Mythical Morning, the duo's YouTube show now 14 years into its run.

Taste tests have become one of the show's most reliable segments, and on YouTube viewers can watch dozens of "food feuds" in which the pair compare fast food items from different chains. That makes the format a natural fit for a burger promotion aimed at the show's existing audience.

For creators, the deal is a reminder that a recurring segment can be the asset a brand buys into, rather than a one-off ad read.