slyposting 

It means posting on social media for a specific person but you do not reference them in an explicit manner. Just to see they’ll see it, or that it gets seen by them.

Woah I’m slyposting because I’m wanna see if my crush sees my story

slyposting by Just_a_bean February 8, 2023

sadposting 

A form of post-ironic shitposting involving deppressing themes and a semi verbose style that would be legitimately depressing if it weren't for an element of absurd humor element added in

The emotional whiplash I got from watching Gondola sadposting videos launched me into the fourth demension and allowed to ascend past godhood

sadposting by Jerry from State Farm August 14, 2017

subposting 

Subposting is sort of like subtweeting but on any platform of social media. Most people subpost with the intention of secretly talking about or referencing (typically a person) that they are angry or annoyed at without directly naming or tagging said person(s). Sometimes subposting can be in a positive manner but usually not as it is an activity usually used by passive-aggressive people.

I was subposting about Monica on Instagram after she was gossiping about me behind my back.

subposting by random66811 September 3, 2017

Slotposting 

A video, usually depicted in lower quality, of a person WINNING BIG on any form of gambling. Typically paired with loud casino-esque audio, and images depicting large sums of cash.

person:"please stop slotposting, it is not healthy"
person 2:"I love slotposting"

Slotposting by JohnathanBollocks672 October 31, 2023