Raw can also refer to the lack of a protective layer. One can rub their skin raw, for example, meaning the skin was rubbed so hard that the top layer was removed. The “cooking” in this case would be the skin healing back. And putting a condom over it for safety.
Alternatively the phrase suggests a wiener is cooked for protected sex so it wasn’t the best used metaphor in the first place.
Raw can also refer to the lack of a protective layer. One can rub their skin raw, for example, meaning the skin was rubbed so hard that the top layer was removed. The “cooking” in this case would be the skin healing back. And putting a condom over it for safety.
Raw meat carries infectious disease