filtered 

When a subject and/or class, usually in higher education scientific fields, is so convoluted and hard to follow, that it is impossible for one to succeed in it. This might be due to the professor, or the subject itself. In this case, the subject acts as a filter, preventing you from moving on to more advanced subjects that built upon it.
This can often extend or apply to specific concepts included or related to a subject or class.
In any of the above cases, it is fair to say that one has been filtered.

-Did you understand anything from the previous lecture?
-No, I'm not even sure the professor understands what he's teaching.
-Huh. I guess we've both been filtered.

filtered by Re-Z May 3, 2021

Shit Filtered Fart

A punjent fart which is filtered through shit in the anus before being expelled.

Usually eggy but can sometimes smell like Salami.

Aww man, I keep doing shit filtered farts, I better go and take a shite.

Shit Filtered Fart by Scott Andrew Daly January 24, 2009

Filterfishing 

To lure someone on dating apps or social media with heavily filtered and edited photos. It’s you, but like... not really. Not quite catfishing, but almost.

His date showed up looking 10 years older and 40 lbs heavier. That girl went filterfishing.

Filterfishing by MContrary January 13, 2020

Filtered 

When a casual lacks the skill to beat a challenge or boss.

Wow did you see all of the casuals filtered by Balteus in AC6?

Filtered by Nyakomata August 31, 2023

Brain filters 

Brain filters are what filter what you see and how you see it. They help you understand and recognize everything you see. If your brain filters are "clogged", you will begin to misunderstand things and mistake them for something else. If this happens to you, you need to change your brain filters. You can prevent damage to your brain filters by getting plenty of sleep.

I saw the letter w as zero today. My brain filters must need changing.

Brain filters by Aricia Azure February 6, 2010

Snapchat filters 

Used to by whores to let you know they are whores

If you use Snapchat filters, then you are a whore

Snapchat filters by WE/HI CLIC May 13, 2018

Camel Filters 

The first filtered line of Camel cigarettes. Same cigarette as the unfiltered Camels, just in the 50's when cigarettes were proved to cause cancer, comapanies started to add filters to their cigarettes to filter some of the toxins out of the smoke. It also alowed for a smoother smoke. R.J Reynolds Tobacco just decided to add a filter to the regular Camel cigarette, hence the name 'Camel Filters'.

Underaged kid with no ID: Can i get a pack of Camel Filters?

Idian Cashier with thick indian accent: That will be $5.51

Camel Filters by death5089 May 24, 2008