sweater bullets 

These are nipples protruding through the fabric of a sweater, usually of a braless woman.

It was below freezing, and Melissa's sweater bullets were obvious.

sweater bullets by Elvis Wearing a Bra on His Head January 13, 2007

demon sweat 

A nervous, sometimes cold, and fast sweat.

Also possibly one of the best songs ever, written by Ween.

The sky dripped in a demon sweat the night she left
Wrapped up in a blanket and I'm feelin' wet
They said she flew from the goals in her life
Then she wet like blood from a knife
I'm here, and it's all so clear now
The wind flows and it's blowing cold, and I'm still here
Gripping onto what's not around
Now it's all so clear to me now
Now I know, sometimes I try a bit too hard
And I can't let go of you

demon sweat by PTKT July 6, 2006

Sweat-Lord

A term used to describe someone who is a mega tryhard at something (usually in games such as Fortnite) and goes above and beyond to try and show off their "skills"

omfg Richard you're such a fucking sweat-lord, chill out it's just a game bro

Sweat-Lord by SoupremeLeader December 30, 2018

Keef sweat 

When a female vigina starts to sweat causing a sour smell in that general area

“Aye John that girl has a Keef sweat “

Keef sweat by Cheese penis o506 January 24, 2020

sweater paws 

When somebody brings the overly-long sleeves of their sweater down to cover, or partially-cover, their hands.

"Did you see that Attack on Titan pullover Dan Howell was wearing in his latest video?"
"Of course! He was rocking those sweater paws, though. It was adorable."

sweater paws by mooksie01 October 25, 2015

Sweater Weather 

A song by an American alternative pop band called The Neighborhood.

Associated with the bisexual community. It is a cute love song with a slightly edgy aesthetic. It was number one on the Billboard Alternative Songs chart in June 2013. It features in many LGBTQ+ relationship music playlists, and many spotify playlists in general.

Lad 1 : The song Sweater Weather is so cute!!
Lad 2 : That's the bisexual anthem lol
Lad 1 : I know
Lad 2 : Is this how you're coming out to me, king?
Lad 1 : ...Perhaps.

Sweater Weather by Cryptigon April 11, 2020

Secret Sweater

When person has thick hair on their front and back, appearing like they are wearing a sweater. Extremely hairy chest and back. Hair so thick on the front and back of a body, it could be a piece of clothing.

Dad took off his shirt at the pool, so all my friends saw his secret sweater. The police officer was extra warm, because under his uniform he had a secret sweater.

Secret Sweater by Prince Hairy February 28, 2017