The ornamental design for a thongsock, as shown and described.
FIG. 1 is a front perspective view of a first embodiment of a thong sock for a right-foot, a second embodiment for a thong sock for a left-foot being a mirror image thereof for each related view herein.
FIG. 2 is a front elevation view of the thong sock of FIG. 1.
FIG. 3 is a rear side elevation view of the thong sock of FIG. 1.
FIG. 4 is a left side elevation view of the thong sock of FIG. 1.
FIG. 5 is a front elevation view of the thong sock of FIG. 1.
FIG. 6 is a top plan view of the thong sock of FIG. 1; and,
FIG. 7 is a bottom view of the thong sock of FIG. 1.
The dash-dash linking demarks disclaimed portions of the present invention, including the grip-pad portions on the bottom. The dashed lines for the foot are for illustrative purposes only and forms no part of the claimed design. The surfaces are lightly lined for contour.