"Vapenation" is a term that combines two words: 'vape' and 'erection'. In the context of adult content, it refers to a scene or video where individuals engage in sexual activities while using vaporizers, often associated with e-cigarettes or vaping devices. This tag implies that both the act of vaping and explicit sexual content are featured within the video. It is commonly used by viewers who have an interest in both adult entertainment and vaping culture.