"Trai-dep" seems to be a combination of two words: "trai" and "dep." Without any context or language, it is difficult to provide an accurate translation. However, assuming these are English words, the tag could mean:
1) Trai - This could possibly refer to either a person or a specific sexual act involving penetration. It may also indicate the subject of the video as "tra" in certain languages can mean something similar to "in the ass" which is a common term used in porn videos.
2) Dep - Again, without context it's hard to tell but this could be referring to depth or depth perception depending on the language. In English, it does not have any direct relevance to pornography or sexual acts.
Based on these assumptions, the tag "trai-dep" might refer to a video involving anal sex (tra), possibly emphasizing on deep penetration (dep). But without further information about the specific context or language involved, this interpretation could be incorrect.