_-girl-hot-boyfriend-tina-nandi_und_720pmp4

This often stands for "undefined" or "and" (in German). If it's a couple's video, "and" is usually the correct translation.

"New upload: A look into Tina Nandi's latest vlog." 📂 Option 3: Formal File Archive Name Tina_Nandi_Boyfriend_HD_720p.mp4 💡 Tips for renaming: _-girl-hot-boyfriend-tina-nandi_und_720pmp4

Use spaces or dashes instead to make it readable. This often stands for "undefined" or "and" (in German)