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

homosexual supporting cast 

A phrase used in the anime "Ouran Highschool Host Club" when one of the characters named Tamaki Suoh explained that since he and Haruhi are the main characters, they clearly must be love interests. His response to the twins' question when they asked him what the rest of the group was, he said they were the "homosexual supporting cast. In summary; he meant that he and Haruhi were straight while the rest of the host club was gay.

Hikaru and Kaoru: Oh yeah, and what does that make us?
Tamaki: You; are the homosexual supporting cast!

homosexual supporting cast by kwerkykitty200 September 28, 2017

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

supporting the wall 

When you are out, but instead of enjoying yourself you proceed to lean against the wall, a pillar, etc. Usually with some alcoholic beverage and/or a cigarette.

Lisa: Oh my! I am having such a great time, are you alone here by the way?

John: Nah, my friend Paul came along, but he is only supporting the wall!

supporting the wall by TheDefinitioner90 November 2, 2010

Supporting Miguel 

To buy or consume cocaine. This originates from the meme that asks to help a farmer boy called Miguel who can only obtain food by trading coca leafs. Therefore by buying and/or consuming cocaine supports Miguel.

Alright guys, who’s supporting Miguel tonight?

Supporting Miguel by HighFlyingKick September 26, 2019

supporting character 

a character in a narrative that is not focused on by the primary storyline, but appears or is mentioned in the story enough to be more than just a minor character

he's more like a supporting character then a minor character don't you think

supporting character by leley6 May 29, 2017

Supporting Chip 

When you dip too much guacamole or salsa or anything on a chip and you need to add another chip to even the Chip/Dip ratio.

*dips chip in salsa*

Aww man I went overboard on the salsa! Time to use a supporting chip
*reaches in bag of chips and grabs another chip*
My Chip to Dip ratio is now even! Yummy.

Supporting Chip by TheMilk July 1, 2011