- A YouTube video (https://www.youtube.com/watch?v=xEbRzfcDN3E) was shared showing copper and lead dissolving in 3 M phosphoric acid (H₃PO₄); hydrogen peroxide (H₂O₂) is required to drive the copper reaction.  
- Discussion confirmed that the metals are converted into soluble copper and lead phosphate salts, with a suggestion to test small samples in a well-ventilated area.  
- A cryptic image link (https://i.juick.com/p/3042229.jpg) was posted without explanatory context, leaving its relevance to the channel’s themes open to interpretation.