This porn video tag, "crtoon-big-tits," refers to a type of animated adult content featuring cartoon characters with large breasts. The term "cartoon" denotes that the sexual activity is depicted through animation rather than live-action. Additionally, "big tits" indicates that the focus of this specific cartoon is on the female characters' large chests. This tag is for adult audiences familiar with animated pornography and those who have an interest in animated big tits content.