The ornamental design for a back washing and scrubbingbrush, as shown and described.
FIG. 1 is a front elevational view of a back washing and scrubbing brush illustrating my invention;
FIG. 2 is a view of the right side thereof, the opposite side being a mirror image thereof;
FIG. 3 is a view of the top side thereof, the opposite side being a mirror image thereof; and,
FIG. 4 is a rear view thereof.
The series of openings on the far left vertical bar as shown in FIG. 1 are partially shown for ease of illustration, it being understood that those openings continue in the same manner shown on the far right vertical bar in FIG. 1.