Hookah Stem

FIG. 1 is a front top perspective view of a hookah stem, showing my new design;

FIG. 2 is a front elevation view thereof, with a rear elevation view being a mirror image thereof and therefore not illustrated in the drawing disclosure;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a right-side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown in the drawings depict portions of the hookah stem that form no part of the claimed design.