Here's the surprising reason why pen caps have a small hole at the top - YouTube
The Reason Why There's a Small Hole at the End of Some Pen Lids: It's to Save Lives - Goody Feed
Why Do Pen Lids Have Holes
There's a reason that BIC pens have a hole in their lid | JOE is the voice of Irish people at home and abroad
The Hole Truth About Ballpoint Pens – Now I Know
Can You Really Clear an Airway with a Ballpoint Pen Like in the Movies?
Find Out the Surprising Reason There Is a Hole in the Top of Your Pen Cap
How the hole on the end of a Bic pen cap could save your life
Why Do Some Pens Have Holes in Their Caps? You'd Have Never Guessed the Reason - News18
You'll Never Guess Why Pen Caps Have Holes. This Is Absolute Genius! - ScoopWhoop
Cliff Pickover on X: "The REAL reason why pen caps have holes in them: https://t.co/4dK8HwkAkz https://t.co/iNNDXq7J41" / X
If You See a Hole In a Pen Cap, This Is What It Means | Trusted Since 1922
There's actually a really important reason for the little hole in pen lids | You
Do you know why pen caps have holes in them? | Viral News, Times Now
If You See a Hole In a Pen Cap, This Is What It Means | Trusted Since 1922
Why Pen Caps Have Holes in Them - ATTN:
did you know? | Bic pens, Bic, Fun facts
This Bic pen manufactured prior to 1991, before the company added an anti-choking hole in the cap. | /r/mildlyinteresting | Mildly Interesting | Know Your Meme
The Bic pen - an uncelebrated French design classic
If You See a Hole In a Pen Cap, This Is What It Means | Trusted Since 1922
Do you know why Pen Caps have holes?
There's A Surprising Reason Why Pen Caps Have Holes In Them | IFLScience
Viral video about why pen caps have a hole stuns social media
You Know That Little Hole in Your Pen Cap? It Could Save Your Life | Gear Patrol
Why are pencils yellow? Why do pen caps have holes? These and other wacky facts about writing instruments - YP | South China Morning Post
