The ornamental design for a noveltyclock, as shown and described.
FIG. 1 is a top and front perspective view of a novelty clock showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
In the drawings, the broken lines depict unclaimed subject matter only and form no part of the claimed design. The short dash-long dash broken lines indicate the bounds of the claimed design and form no part of the claimed design.