FIG. 1 is a front and top perspective view of a portable toilet, showing my new design;
FIG. 2 is a rear and bottom perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is an exploded view thereof;
FIG. 10 is another perspective view thereof, shown in an alternative position; and,
FIG. 11 is another perspective view thereof, shown in an alternative position.
The broken lines in the figures illustrate portions of the portable toilet that form no part of the claimed design.