If you give your child a long name, ie: Alexander or Elizabeth, you are setting them up to have a nickname. My son has a long name, and we started calling him by a nickname before he even started school, I knew he wasn't going to want to have write the whole thing!

Lex is latin for "law" which is what someone needs to lay down with your mother because she is acting like a child.

He is 16, he gets to decide how is addressed by people addressing him.

Is this why Lex Luthor became a villain? lmao

It sucks that your mom is a stupid twat, but this is a good life lesson. You now know what you will have to deal with in regards to her going forward.

She can't stop it. She might be able to bully the teachers into using your full name but people will call you what you want and ask them to. Just keep going with what you like.

How is this even a question. The conversation should be if the mom just needs clinical help, or a full involuntary psychiatric hold. Thats the real question.

I hated my name growing up and had a 'goes by' (shortened version) that was used through secondary school and was even on my driving licence. My mum hated it, and had similar arguments, although her main one was always "but your legal name is [name on birth certificate."] So I changed it legally. She didn't like it, but if she tried to insist on the original name, I'd remind her what my legal name was, and that my passport now also had my new name. I'm getting in for 60 now and most people (including my husband) have only ever known me by the changed name. I still hate the old one, and glad no one would consider using it any more.

I admit the first Lex that came to my mind was a Sci-Fi starship (anyone else remember "Lexx - The Dark Zone"? https://de.wikipedia.org/wiki/Lexx_%E2%80%93_The_Dark_Zone), and then Lex Luthor. I love the comment tat suggested calling his mum by HER given name instead of "mum" - that might actually be an approach that works: "I'll call you what you want, and you call me what I want - or not"

OPs Mother is overreacting to a stupid nickname. My name is Andrea. People call me Anne or Ange. It's a preference.

The mother is, well, nuts. Nick names are normal. She really needs to leave him alone.

well, at 18 you can officially change it to lex. your mom & dad probably fought about your name and she 'won' but now you are choosing to not use it and she is shown to actually be the ,loser'.

He's going to end up going NC when he moves away for college.

my name's erin. you can't make nicknames with it, but i think my name's cool cause it means ireland in irish.

I am kinda in the mom’s shoes. My oldest daughter doesn’t use the name she was given at birth. Its intended pronunciation is in a language other than English. She uses the English version. I am the only one who uses the other pronunciation. She goes by a shorter version (nickname) of it which I was really not a fan of at first. It is a different nickname than the one everyone had used for her for years. She changed it due to traumatic associations with the original one. So, as much as I love the way I named her and the nickname I used to use, ultimately it’s HER name. Therefore, I call her by her preferred nickname the majority of the time. And the rare occasions when I use her given name, she’s okay with ME using it. I get special Mom dispensation.

I changed my name by deed poll as I did not like my given name especially as it was very popular the year I was born so was dating. I had great fun choosing a new name but kept circling back to Primrose as this was name of a horse I owned for 26 years - my original name was very late 1950’s and very plain too which I think is also why I chose a ‘pretty’ new name.

My parents gave me an extremely formal name, such as "Bartholomew." They never once referred to me by that name or even the typical shortened version but instead an extremely shortened version to the point people looked at them when they called my name. A rose by any other name would smell as sweet.

I hope the OPs mother can hear my eyes rolling from here.

Nobody ever likes their name especially as a teenager.

Your mom has some control issues. She named a baby Alexander. You are almost a man, and she is losing control of her baby. Cut her some slack, but be you.

My full name is Kathryn. Like someone ^^ said, stop calling her "mom", start calling her by her given name.

Lex is a great name! Of course the most important thing is that he likes it but secondly, Lex is the Latin word for "law" which I think is insanely awesome