The porn video tag "cumlover" refers to a person who enjoys or has an affection for receiving and indulging in the act of ejaculation, also known as 'cum'. This individual may derive pleasure from being the recipient of another person's climax during sexual activities. They might have a specific fantasy or desire associated with the idea of cum play, or simply find it sexually stimulating. The term is often used to label scenes or content that focus on this particular aspect of sex.