The ornamental design for a bun for hamburgers or the like, as shown and described.
FIG. 1 is a front elevational view of a bun for hamburgers or the like showing our new design;
FIG. 2 is a left side elevational view thereof, the undisclosed right side being symmetrical to the left;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a front perspective view thereof, the broken lines showing an arrangement of additional buns are for illustrative purposes only and form no part of the claimed design.