Fumblerules

A fumblerule is a rule of language or linguistic style, humorously written in such a way that it breaks this rule.
The science editor George L. Trigg published a list of such rules in 1979. The term fumblerules was coined in a list of such rules compiled by William Safire on Sunday, 4 November 1979, in his column "On Language" in The [New York Times]. Safire later authored a book titled Fumblerules: A Lighthearted Guide to Grammar and Good Usage, which was reprinted in 2005 as How Not to Write: [The Essential Misrules of Grammar].

Examples

"Avoid clichés like the plague."
"Don't listen to any advice."
"Ending a sentence with a preposition is one thing that I will not put up with."
"English is the wikt:crème [de la crème|crème de la crème] of all languages."
"Eschew obfuscation, espouse elucidation."
"It is bad to carelessly split infinitives."
"Never use no double negatives."
"No sentence fragments."
"Parentheses are unnecessary."
"The English [passive voice|passive voice] should never be employed."
"You should not use a big word when a diminutive one would suffice."
"And don't begin a sentence with a connective."
"Using discourse markers in academic writing basically sounds terrible, you know."