Plug

FIG. 1 is a front, top, and side perspective view of a plug showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is an opposite side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings form no part of the design and depict portions of the plug that form no part of the claimed design.