The ornamental design for a levitatingfootballhelmet, as shown and described.
FIG. 1 is a top perspective view of a levitating football helmet embodying my new design;
FIG. 2 is a top elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a bottom elevational view thereof;
FIG. 5 is a back elevational view thereof; and,
FIG. 6 is a right side elevational view thereof, the left side being a mirror image thereof.
In the drawings, the broken line showing of a display frame and portions of a face mask depicts environmental subject matter and forms no part of the claim.