"AtBottom4Now" is a unique porn video tag that has a specific meaning in the context of adult content.
This tag refers to a particular sexual position or act known as "at the bottom." In this scenario, one partner is positioned on the bottom and the other is on top. The number "4" suggests that this is a preference or fetish for this specific position. Finally, the term "now" might imply that the content creator is emphasizing their current desire to engage in this particular sexual act.
So, "AtBottom4Now" is a porn video tag indicating a strong preference for the "at the bottom" sex position and a present inclination towards engaging in such an act.