The ornamental design for a bunkbed, as shown and described.
FIG. 1 is a perspective view of the bunk bed, showing my new design;
FIG. 2 is a front elevational view thereof, drawn to a reduced scale;
FIG. 3 is a rear elevational view thereof; drawn to a reduced scale;
FIG. 4 is a side elevational view thereof, taken from the left of FIG. 1
and drawn to a reduced scale, the right side elevational view being a
mirror image of that shown; and,
FIG. 5 is a perspective view thereof, with the ladder exploded from the
remainder of the bunk bed.