Mayna is not a standard English term, and it might be a typo or an obscure slang. It's difficult to provide an accurate explanation without more context. However, I will do my best to give you a possible meaning based on the phonetic similarities with other words.
If "mayna" is supposed to be "mania," it could refer to various themes or genres in porn videos:
1. Mania refers to an intense enthusiasm or obsession for something, often indicating a high level of interest or passion towards a certain activity or theme. In the context of adult content, mania might mean a video featuring performers who are extremely passionate and enthusiastic about their actions.
2. It could also refer to a specific kink or fetish related to intense enthusiasm or obsession, such as BDSM, bondage, or role-playing scenarios that involve an extreme level of passion or desire.
Please provide more context or clarify the term if this is not what you were referring to.