My mine

A lame expression coined by some random guy in 2008, and has apparently been used only by him since then. Egyptians, however, are trying to bring this term back to life currently after being mentioned in a video that went viral on social media, and it's become a linguistic hot potato. Being unable to understand what all the freaking fuss is about, I still don't consider this creepy expression correct, and I don't think it should be used on any possible occasion. Remarkably, many English teachers in Egypt, including sophisticated ones, still claim it is correct!!! Do you have ANY CREDIBLE EVIDENCE?? Come forward.

there is no such a thing called my mine

If it's used in a specific context it's considered to be an equivalent to "my sweetheart" or "mine" otherwise my mine means that you own a mine ( a deep hole in the ground for extracting coal or other minerals by digging ), however its a slang word which means it's not grammatically correct ofc.

there is no such a thing called my mine

Abbreviation for she my mine. Possession. Mamlokty

some one you are currently dating, in a serious relationship, or married to or someone else you can claim possesion of for similiar reasons

Watch your mouth and I won't disrespect you.
Show some respect.