AIO my husband shaves his balls before dnd

Sorry, first time posting. I occasionally like to lurk, but I am not a frequent reddit user.

Recently, I have noticed a trend. Before he goes to his DnD games, my husband (30sM) shaves his balls. I don't want to make him feel embarrassed, he can be a little sensitive, so I don't want to bring it up to him, but it just feels like a strange thing to do. This is a habit that has only started the past couple of months and he has been going to DnD games for a several years. At the same time... I'm not sure if I should be concerned or not. Is this a normal thing to do like women shaving their legs before going out or am I right to be wary of why he might be doing this? Should I be looking for other weird things? Am I overreacting?

EDIT: i asked him about this trend to which he explained that his character’s bit is that he “always shows his balls to everyone and they have to be smooth, otherwise the bit doesn’t land”. He refuses to change his behaviour, do I dump him for this?