The term "boys-sucking-cock" refers to a category or genre of pornographic videos that involve young male performers engaging in oral sex acts, specifically fellatio, where one boy performs the act on another boy's penis. This tag is often used as a descriptor for adult content, particularly among those who consume and create this type of material. It serves to classify and categorize specific scenes or videos within the realm of pornography that involve male-on-male oral sex acts.