FIG. 1 is a top perspective view of a mug showing my new design;

FIG. 2 is a top plan perspective view thereof;

FIG. 3 is a bottom plan perspective view thereof;

FIG. 4 is a left side elevational perspective view thereof;

FIG. 5 is a rear elevational perspective view thereof;

FIG. 6 is a right sie elevational perspective view thereof;

FIG. 7 is a front elevational perspective view thereof;

FIG. 8 is an environmental perspective view thereof; and,

FIG. 9 is an environmental perspective view showing a second embodiment of my new design.

The broken line portions of the disclosure are for illustrative purposes only and form no part of the claimed design.