The ornamental design for a toiletbrush, as shown and described.
FIG. 1 is a perspective view of a toilet brush showing my new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a perspective view thereof shown in an environment of use; and,
FIG. 10 is an enlarged view of portion 10 shown in FIG. 2.
The broken lines shown in the drawings depict environment and form no part of the claimed design. The dot-dash broken lines shown in FIG. 2 and FIG. 10 depict enlarged view indicators and form no part of the claimed design.