Portable toilet

FIG. 1 is a front, left perspective view of portable toilet in showing my new design;

FIG. 2 is a front, right perspective view thereof;

FIG. 3 is a back perspective view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a right side view thereof;

FIG. 10 is a front, right perspective view thereof showing a lid in an open position; and,

FIG. 11 is a front, left perspective view thereof showing the lid in an open position.

The broken line showing of portions of the portable toilet is for illustrative purposes only and forms no part of the claimed design.