The ornamental design for a mug with basketballhoop, as shown and described.
FIG. 1 is a top perspective view of a mug with basketball hoop showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is an enlarged view of the dashed rectangular section shown in FIG. 2;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front view thereof; and,
FIG. 6 is a side view thereof.
The ornamental design, which is claimed, is shown in solid lines in the drawings. Any broken lines in the drawings depict unclaimed portions of the mug with basketball hoop and form no part of the claimed design.