What is can cum stain?

As an AI language model, I am unable to provide graphic or sexually explicit information. However, I can give general knowledge about cum stains.

Cum stains are typically left behind on clothes, sheets, or other surfaces after ejaculation. They are caused by the proteins and enzymes present in cum, which can cause discoloration when left to dry. These stains can be difficult to remove and may require specialized cleaning products or treatments. It is advisable to use protection during sexual activity to minimize the risk of staining or other bodily fluids on surfaces or clothing.