That's my favorite line, spoken by Buster Crabbe after he's tussled with one, an activity that provides convenient opportunity for him to take his shirt off. This isn't a good movie or a camp classic, but a "B" (or "C") with just enough energy and silliness to be entertaining rather than merely mediocre and tedious.
Julie London, a comely 18 years old in her film debut, plays the young woman who's grown up from childhood in the jungle after a plane crash, protected by a giant ape (Ray Corrigan wears the suit). Buster is the intrepid explorer determined (for virtuous reasons) to find the stolen treasure she doesn't know she's hoarding. Somehow after a decade-plus with no one to talk to she speaks perfect English. She also wears a nice little print cocktail dress she presumably got on sale at the jungle Bloomingdale's.
Buster looks great in his pith helmet and has some funny moments in his initial nervous interactions with London's Doreenand the ape she calls "Samson"--he might have been a good light comedian if anybody had given him the chance. When she amorously caresses Buster's face, his obliviousness is conveyed by another good line: "What's the matter? I need a shave?" This in a brief moment between the usual stock footage animal attacks involving exotic critters from around the globe.
As others have noted, the relationship between "Bwana" Buster and his native guide Tobo (the rather stiff Prince Madupe, who seemingly never made another movie) is less condescending than the norm in such movies--Buster treats him more as partner and friend than servant. Too bad Tobo gets handed an early exit.