At Manuel's Spanish-American Bar, Manuel serves Mike Hammer a glass of beer that is at least half-head with a foamy dome extending above the top of the glass. With an instant viewing angle change, the head on the beer is no more than an inch tall with its top level with the top of the glass. Again at the original viewing angle the beer has the thick head with the dome above the top of the glass. With yet another angle change, the head is short, not even extending to the top of the glass.
Mike Hammer hands Charlotte Manning a chicken drumstick so that she holds the meaty end. An instant later, she holds it by the bony end.