https://en.wikipedia.org/wiki/Jeremy_(snail)

these two snails mated with each other instead, producing 170 right-coiled snails. One of the left-coiled snails later mated with Jeremy, producing 56 offspring, all of which also had right-coiling shells.

they also omitted this crucial detail:

Jeremy was named after the left-wing British Labour politician Jeremy Corbyn, on account of it being a “lefty” snail, but also due to Corbyn’s reported love of gardening.

Wikipedia says:

The mitochondrion is popularly nicknamed the “powerhouse of the cell”, a phrase popularized by Philip Siekevitz in a 1957 Scientific American article of the same name.[4]

But know your meme attributes its meme status to this tumblr post from 2013:

Contrary to comments in many places like this reddit thread from 2018, I suspect the phrase wasn’t actually used in many textbooks or very commonly known prior to that tumblr post.

(If you search on Google Books you can find numerous textbooks using the phrase. Range-based search on Google Books appears to be broken so I’m not sure, but all the ones I checked were published well after 2013.)

https://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo

see also https://en.wikipedia.org/wiki/James_while_John_had_had_had_had_had_had_had_had_had_had_had_a_better_effect_on_the_teacher

Due to the Norwegian language conflict there have been various competing forms of written Norwegian over time, two of which have been officially recognized as equally valid by the Norwegian parliament since 1885. Both apparently changed their spelling of “slut” to “sludd” in the 21st century, Bokmål in 2005 and Nynorsk in 2012, presumably in an effort to encourage English speakers to make jokes about Swedes and Danes instead of them.

this guy knuths how units work