FIG. 1 is a top perspective view of my ornamental design for a sexual aid of the present invention;
FIG. 2 is a rear view of the sexual aid of FIG. 1;
FIG. 3 is a bottom perspective view of the sexual aid of FIG. 1;
FIG. 4 is a top view of the sexual aid of FIG. 1;
FIG. 5 is a side view of the sexual aid of FIG. 1;
FIG. 6 is a bottom view of the sexual aid of FIG. 1;
FIG. 7 is a front top perspective view of the sexual aid of FIG. 1;
FIG. 8 is a front view of the sexual aid of FIG. 1;
FIG. 9 is a front bottom perspective view of the sexual aid of FIG. 1;
FIG. 10 is a top view of an ornamental design for a sexual aid of the present invention;
FIG. 11 is a side view of the sexual aid of FIG. 10;
FIG. 12 is a bottom view of the sexual aid of FIG. 10;
FIG. 13 is a front view of the sexual aid of FIG. 10;
FIG. 14 is a front top perspective of the sexual aid of FIG. 10;
FIG. 15 is a front bottom perspective view of the sexual aid of FIG. 10; and,
FIG. 16 is a rear view of the sexual aid of FIG. 10.
The broken line showings of FIGS. 1-16 are for illustrative purposes only and form no part of the claimed invention.