After being kicked in the testicles, the man will suffer from a strong pain. The first thing to do is to assess how strong the pain is. However, it is not necessary to panic because pain has no relation on how severe the testicular trauma is.
As the next step, it is recommended to apply ice to the area to avoid and reduce possible inflammation in the testicles. It is also recommended to avoid physical exercise such as running or jumping.
Finally, if testicular pain continues after some time, the ideal would be to visit a urologist for an examination of the area and to resolve any doubts.