FIG. 1 is a perspective view of a first embodiment of the mug;

FIG. 2 is a front view of the first embodiment of the mug;

FIG. 3 is a back view of the first embodiment of the mug;

FIG. 4 is a right view of the first embodiment of the mug;

FIG. 5 is a left view of the first embodiment of the mug;

FIG. 6 is a top view of the first embodiment of the mug;

FIG. 7 is a bottom view of the first embodiment of the mug;

FIG. 8 is a perspective view of a second embodiment of the mug;

FIG. 9 is a front view of the second embodiment of the mug;

FIG. 10 is a back view of the second embodiment of the mug;

FIG. 11 is a right view of the second embodiment of the mug;

FIG. 12 is a left view of the second embodiment of the mug;

FIG. 13 is a top view of the second embodiment of the mug;

FIG. 14 is a bottom view of the second embodiment of the mug;

FIG. 15 is a perspective view of a third embodiment of the mug;

FIG. 16 is a front view of the third embodiment of the mug;

FIG. 17 is a back view of the third embodiment of the mug;

FIG. 18 is a right view of the third embodiment of the mug;

FIG. 19 is a left view of the third embodiment of the mug;

FIG. 20 is a top view of the third embodiment of the mug; and,

FIG. 21 is a bottom view of the mug.

The broken lines depict environmental subject matter only and form no part of the claimed design.