I was about 12 years old when I learned that the lyric in Jimi Hendrix's "Purple Haze" is "excuse me while I kiss the sky" and not "excuse me while I kiss this guy." I remember sitting in my friend's basement, CD booklet in hand, staring at the actual lyrics and feeling my worldview shift. For years, I had imagined Hendrix pausing mid-song to kiss some random dude. The real lyric made more sense โ but the misheard version was funnier, and the fact that my brain had confidently substituted "this guy" for "the sky" revealed something important about how human hearing actually works.
What Is a Mondegreen?
In 1954, an American writer named Sylvia Wright published an essay in Harper's Magazine about a childhood memory. When she was young, her mother read her a Scottish ballad called "The Bonny Earl of Murray." One line went: "They hae slain the Earl o' Moray / And laid him on the green." But young Sylvia heard: "They hae slain the Earl o' Moray / And Lady Mondegreen." She had, without realizing it, invented a character โ Lady Mondegreen โ who was apparently slain alongside the Earl. When she later discovered the real lyrics, she was genuinely disappointed that Lady Mondegreen had never existed. Wright named this phenomenon the "mondegreen" โ the mishearing of a phrase in a way that gives it a new meaning โ and the term caught on among linguists and, eventually, the general public.
Famous mondegreens include: "There's a bathroom on the right" (for Creedence Clearwater Revival's "There's a bad moon on the rise"), "The girl with colitis goes by" (for The Beatles' "The girl with kaleidoscope eyes"), and "Sweet dreams are made of cheese" (for Eurythmics' "Sweet dreams are made of this"). My personal favorite might be the child who heard the line from the Lord's Prayer โ "Lead us not into temptation" โ as "Lead us not into Penn Station." Theologically dubious, geographically specific, and completely charming.
What Is an Eggcorn?
While a mondegreen is a one-off mishearing (usually of a song lyric or poem), an eggcorn is a systematic reshaping of a word or phrase into something that "makes more sense" to the speaker. The term was coined by linguist Geoffrey Pullum in 2003 on the Language Log blog. A reader had written in about a woman who consistently said "eggcorn" instead of "acorn" โ and Pullum realized this was a specific linguistic phenomenon that deserved its own term. The key feature of an eggcorn is that the substitution makes a kind of semantic sense. An acorn is an egg-shaped seed, so "egg corn" isn't actually a bad description. "For all intensive purposes" (instead of "intents and purposes") makes sense if you think of purposes as being intense. "Old-timer's disease" (instead of "Alzheimer's disease") is actually a reasonable interpretation of the symptoms โ it's a disease that old-timers get. The eggcorn represents the speaker's brain actively making sense of language, finding meaningful patterns even when those patterns happen to be wrong.
Some common eggcorns: "nip it in the butt" (for "nip it in the bud"), "toe the line" becoming "tow the line" (you're pulling the line, right?), "deep-seeded" for "deep-seated" (seeds are deep in the ground, this makes sense), "curve your enthusiasm" for "curb your enthusiasm" (curves are exciting, curbs are restrictive โ the eggcorn kind of works). My favorite might be "lack toast and tolerant" for "lactose intolerant" โ which transforms a medical condition into a commentary on breakfast availability.
Why Your Brain Does This
The existence of mondegreens and eggcorns tells us something profound about how language processing works in the brain. Speech is not received passively like a recording. Your brain is constantly predicting, interpreting, and filling in gaps based on context and expectation. When sound is ambiguous โ and speech is almost always somewhat ambiguous โ your brain makes its best guess about what was said, heavily influenced by what would make sense in context. Sometimes, that guess is wrong, and a mondegreen or eggcorn is born.
This is the same mechanism that allows you to understand speech in a noisy room, or follow a conversation even when the speaker mumbles. Your brain is filling in the gaps. Mondegreens and eggcorns are what happens when the gap-filling mechanism gets creative. And we should be grateful for it โ a brain that never misheard anything would be a brain that was taking no risks in interpretation. Better to occasionally think Jimi Hendrix was kissing a guy than to live in a world where your brain doesn't help you hear at all.