The ornamental design for personal massager, as shown and described.
FIG. 1 is a perspective view of a personal massager, mounted to a stand, shown in dashed lines, with the rounded top of a piston revealed through a front piston aperture, in accordance with the present design.
FIG. 2 is a view of the personal massager shown in FIG. 1 from behind, showing the bottom of the piston revealed through a back piston aperture.
FIG. 3 is a view of the personal massager shown in FIG. 1, with the front piston aperture at the top of the personal massager and the piston extended upward from the front piston aperture; and,
FIG. 4 shows the piston removed from the personal massager.
The broken lines showing of the stand, partial cord and button elements are for illustrative purposes only and form no part of the claimed design. The shade lines shown on the personal massager from behind in FIG. 2 represent contour lines and not surface ornamentation.