The ornamental design for a massagehoop, as shown and described.
FIG. 1 is a front elevational view of a massage hoop, showing my new
design, the rear elevational view being identical;
FIG. 2 is a is a side elevational view thereof, with all other sides being
identical to that shown; and,
FIG. 3 is a perspective view thereof, in use condition; the broken line
showing of the person is for illustrative purposes only and forms no part
of the claimed design.