Hamar are known for their unique custom of "bull jumping," which initiates a boy into manhood.

First, female relatives dance and invite whipping from men who have recently been initiated; this shows their support of the initiate, and their scars give them a right to demand his help in time of need.

The boy must run several times back and forth  across the backs of a row of bulls or castrated steers, and is ridiculed if he fails.