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.
Touching the filtered end of an unlit cigarette to one's asshole and returning it to the package. Keep an extrapack of these to give to moochers or people you don't like.
Boyce always chuckled to himself as his targets placed the brown filtered cigarettes in their mouths.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.