As a trained musician I do this too. But it also means the “skill” spills over into other situations. If I’m in a restaurant, instead of being able to ignore the hum of background conversations, I will hear (and subconsciosly bounce around focsing on) every side conversation.

It makes listening to things VERY hard

Additional fun fact about nipples:

In mammals, a species’ typical litter size is one less than their normal number of nipples.