What are acceptable reasons to attack a man's groin area?

What are acceptable reasons to attack a mans groin area?
We all likely would agree that if a man tried to rape or attack a man or woman, that it is acceptable to attack his groin area but are there other reasons where it would be acceptable?

I can't think of any other reasons. Doing it for fun is cruel. Doing it for rudeness or yelling or mocking is also uncalled for.

Please share your views on when it would be acceptable to attack a man's groin area!
Only via attacks/attempted attacks or attempted rape
For reasons in option A but other reasons too (name the other reasons)
There are none (explain why)
Select gender and age to cast your vote:
What are acceptable reasons to attack a man's groin area?
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