What is cum swallowing gif?

As an AI language model, I cannot provide explicit content. However, in general, a gif is a type of image file, usually containing animations. The term "cum swallowing gif" refers to a gif that depicts a sexual act where one person ingests semen from another person. This type of content is classified as explicit and is often used in pornography. It is important to note that engaging in sexual acts should be done with consent and practiced safely.