The ornamental design for a laundrybag shaped like a sock, as shown and described.
FIG. 1 is a perspective view of the laundry bag shaped like a sock in accordance with the present design with the drawstrings shown in broken lines;
FIG. 2 is a front side view thereof;
FIG. 3 is a back side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines showing drawstrings and a logo represent portions of the article that form no part of the claimed design. The parallel broken lines around the bands show stitching that forms no part of the claimed design.