I claim the ornamental design for a bib, as shown and described.
FIG. 1 is a front perspective view of the new bib design;
FIG. 2 is a left side view of the bib of FIG. 1;
FIG. 3 is a right side view of the bib of FIG. 1;
FIG. 4 is a front view of the bib of FIG. 1;
FIG. 5 is a back view of the bib of FIG. 1;
FIG. 6 is a top view of the bib of FIG. 1, the bottom view being a mirror image of the top view;
FIG. 7 is a front perspective view of a second embodiment of the new bib design;
FIG. 8 is a left side view of the bib of FIG. 7;
FIG. 9 is a right side view of the bib of FIG. 7;
FIG. 10 is a front view of the bib of FIG. 7;
FIG. 11 is a back view of the bib of FIG. 7; and,
FIG. 12 is a top view of the bib of FIG. 7, the bottom view being a mirror image of the top view.
The broken lines on the bib shown in the drawing figures represent perforations and are not part of the original design. The bib is shown with a symbolic break in its height at the bottom. The appearance of any portion of the bib below the break line forms no part of the claimed design. The design includes embodiments that are mirror symmetrical to those illustrated in FIGS. 1-12.