The ornamental design for a stirring implement, as shown and described.
FIG. 1 is a top perspective view of a stirring implement showing my new design;
FIG. 2 is a top plan view of the stirring implement of FIG. 1;
FIG. 3 is a bottom plan view of the stirring implement of FIG. 1;
FIG. 4 is a left side elevation view of the stirring implement of FIG. 1;
FIG. 5 is a front elevation view of the stirring implement of FIG. 1;
FIG. 6 is a right side elevation view of the stirring implement of FIG. 1;
FIG. 7 is a rear elevation view of the stirring implement of FIG. 1; and,
FIG. 8 is a top perspective view showing the stirring implement of FIG. 1 in relation to an environment comprising a container for material to be stirred.
The broken lines in FIG. 8 depict an environment in which the stirring implement may be used that are not considered part of the claimed design.