My visitor card from going to a Pfizer research facility had s | Mildly Interesting 🤔
My visitor card from going to a Pfizer research facility had some sort of time-delayed ink on it. Paper was just white, but now it says "EXPIRED" in pink.
🤔 Send us photos through @mildlyinteresting_robot, and we'll publish them in the @mildlyinteresting channel if they're mildly interesting enough. 📢 Chat with the authors and participants of our ...
