I think it’s because you need to stay warm while out skateboarding and going to shows, but a jacket would cover up your band Tshirt, so long sleeves go underneath.

Back in the day I somehow acquired a promo t shirt for the movie Eurotrip that had long sleeves sewn under short sleeves so it looked like you were wearing 2 layers but it was only 1 shirt. Can't remember where that thing came from, as I've never seen the movie.

I used to have a shirt where the the "long" sleeves where sown onto the short sleeves, giving the illusion I was wearing 2 shirts.

In the 90s, it meant you did heroin

Does it mean anything now? Still a super practical way to get different looks without a big wardrobe through the power of permutation. Also layering produces an air gap that makes this nearly as warm as a sweater and the outer layer rarely needs to be washed. Wore it because I liked music, kept it because I didn't want to buy a lot of new clothes.

Only if it was a thermal. This is nonsense poserism.

Also the year was 1994.

Is that Josh Hartnett?

in america i assume

Whatever happened to Josh Hartnett? Lucky Number Slevin was a great time and Hollywood Homicide was a fun throwback to campy buddy cop movies. Then he just disappeared.

Did we stop doing this?

I also remember a short while where sleeveless hoodie-vests was a thing so I was rocking three layers with shorter and shorter length sleeves like that and I was the coolest kid in my school (probably).

And defeated an alien invasion with Bic drugs.

"Long sleeved T-Shirt"?

Some people remember legit fall where you could layer anything.

They tend to be millenials.

No, it meas that I have prominent man nipples without two layers of cloth.

This and flannel was me in the 90’s; and everyone else. I loved the thermal under a t-shirt look, let me stay both casual and warm!

or that you were anemic and constantly cold

That is still nice. I don't know why we stop.