Frank's Beverages is a Philadelphia-based soft drink company. From 1961 to 1963, Muppets, Inc. produced seven 8-second TV ads for the product Frank's Orange Nectar.
The ads starred Wilkins and Wontkins, renamed "Frank" and "Fink" in these spots. In one ad, Frank is christening a boat with a bottle of Frank's Orange Nectar. Fink refuses to try some, and the vessel sinks.