The short answer is in the excerpt above. The longer answer covers four of the variations people search for.
Is Enter Sandman a forbidden riff?
Yes. Metallica’s Enter Sandman sits second on most informal forbidden-riff lists, after Stairway to Heaven. The same conditions apply: a recognisable opening that beginners can pick out within minutes of first holding a guitar, played repeatedly in shop environments since the song’s 1991 release. The 1992 film Wayne’s World helped codify the joke for Stairway specifically, but in any guitar shop staff opinion poll Enter Sandman shares the top spot.
Why are these riffs banned?
They are not banned. There is no law, no enforced rule, no consequence beyond an annoyed look from staff. The “ban” is an informal cultural agreement among guitar shop workers, started in London shops in the early 1990s and spread internationally by word of mouth and later by internet message boards. The reason is acoustic exhaustion: a single staff member can hear Stairway’s opening fingerpicking forty or fifty times in a single shift, played by forty different people who cannot quite nail it. Multiply across a career and the staff side-eye becomes inevitable.
What other songs are on the list?
The full informal list typically includes Stairway to Heaven, Enter Sandman, Smoke on the Water, Sweet Child O’ Mine, Iron Man, Back in Black, Wonderwall, Sweet Home Alabama, and Purple Haze. All share two qualities: an immediately recognisable opening riff and a low technical bar to attempt, which is why beginners reach for them in shops.
Is it real or is it a joke?
Both. The cultural agreement is real — most guitar shop staff will tell you they prefer not to hear Stairway on loop. The “ban” framing is a joke that Wayne’s World turned into a global gag. Some shops post signs as a wink, some give you a look, most do not care if you can actually play the song properly. The unwritten escape clause: if you can do the riff justice, the side-eye lifts.
For the full backstory and the rest of the list, our original forbidden-riff piece has the longer write-up.
