knowledge that obvious to anyone with half a brain, often aggravating due to its repetition.

Education obtained at a community college, trade school, vocational college, or junior college.

As heard in the Rodney Atkins song "These Are My People":

"Got some discount knowledge at the junior college where we majored in beer and girls"

Any correct thing you say. You say "that doctors knowledge"

A term for when someone was taught old, biased, and incorrect information. And when someone tries to re educate them about it they get angry and deny any new information.

Knowledge untruthful by virtue of existing in a delusion, hallucination or a perceived alternate reality such as a dream.

An archaic euphemism for sexual intercourse

Backpocket knowledge consists of useless facts that serve no purpose but are still interesting to know nonetheless