Originally posted by @fmf
"school of hard knocks": definition - an indiscriminate virtual institution offering self-accreditation that its graduates use to lend credibility to whatever they have just asserted, regardless of whether it is right or wrong.
See also: Private Reality.
Where did you find that definition, The FMF Dictionary of Snarky Put-Downs?
Try this one on for size:
"The School of Hard Knocks — or University of Hard Knocks — is an idiomatic phrase meaning the (sometimes painful) education one gets from life's usually negative experiences, often contrasted with formal education. It is a phrase which is most-typically used by a person to claim a level of wisdom imparted by life experience, which should be considered at least equal in merit to academic knowledge. It is a response that may be given when one is asked about his or her education, particularly if they do not have an extensive formal education but rather life experiences that should be valued instead. It may also be used facetiously, to suggest that formal education is not of practical value compared with "street" experience." -- Wikipedia
Yes, snark-free.
Or maybe you're familiar with this quote, Rowan Atkinson, from
Blackadder:
"I, on the other hand, am a fully rounded human being, with a degree from the University of Life, a diploma from the School of Hard Knocks, and four gold stars from the Kindergarten of Getting The *hit Kicked Out Of Me."
A little more colorful, but yes, snark-free.