A little context on that tagline “gorillas in the fist”:

Gorillas in the Mist was a book written by renowned primatologist, Dian Fossey, who was murdered nearly 10 years before this ad. A surprisingly popular biopic movie with the same title starting starring Sigourney Weaver as Dian Fossey had come out about 6 years before.

If you haven’t seen it, I highly recommend Gorillas in the Mist; it is a surprisingly beautiful movie. Also, Dian Fossey was a massive badass with a couple screws loose, making her a real force of nature.