Content creator Zack D. posts “A Collection of Things That I Find Interesting,” and an explanation about why ballpoint pen caps have a hole is apparently interesting to his fans, too.

If You See a Paw-Print Sticker on a Mailbox, Here's What It Means If You See a Blue Line Tattooed on a Dog ... out why there's a little hole in your pen cap and how it helps both you and your ...

One person who responded to the TikToker’s post said that folks can go a step further and use blue ink. “My mother works in Finance. She always made sure I have a pen on me at all time and a ...

The caps of ballpoint pens are perforated to prevent choking accidents. Rating: True (About this rating?) For years, posts on Reddit, X and other platforms have claimed that the reason the tops of ...

The idea of perforating the caps of pens appears to have started in the United Kingdom, where a new safety standard was adopted in 1990 (BS 7272). Between 1970 and 1984, nine children in the ...

But the message is not merely to cast a ballot, but how: “Use a blue ballpoint pen only when you vote!” The meme, plastered across online platforms such as Twitter and the fast-growing ...

The idea of perforating the caps of pens appears to have started in the United Kingdom, where a new safety standard was adopted in 1990 (BS 7272). Between 1970 and 1984, nine children in the ...