The ornamental design for a scarfbib, as shown and described.
FIG. 1 is a top plan view of a scarf bib;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right-side elevational view thereof,
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a left-side elevational view thereof;
FIG. 7 is a representation of the scarf bib worn by an infant in a first configuration; and,
FIG. 8 is a representation of the scarf bib worn by an infant in a second configuration.
The broken lines represented in the invention are stitches, which are for reference purposes only and form no part of the claimed design. Additionally, the broke lines defining the infant and clothes represented in FIGS. 7 and 8 are for reference purposes only and form no part of the claimed design.