In the Hitchhikers Guide to the Galaxy Douglas Adams theorised about a planet where all the lost biros migrate to when we're not looking.

Folks I give you this photo of Douglas Adams' grave in Highgate Cemetery.

#HHGTTG

@Waxingtonknee The Redemption of Veet Voojagig ✊
@Waxingtonknee They’ve changed the pot since I was there!
@Waxingtonknee Sad thing is, half of those pens aren’t biros but are roller balls, which are a different thing.
@Waxingtonknee We hope there are precisely 42 pens in the container
@Waxingtonknee And now I can’t help wondering if people in the USA etc. even know what a biro is. (There’s a clue in the photo, folks.)
@Waxingtonknee this is what it looked like middle of last month, yes one of those pens are mine. Round back people stashed a bunch of towels.
@Waxingtonknee The Biro so much mightier than any sword!
@Waxingtonknee beautiful cemetery. Went there a few years ago. That Marx statue is huge.