Chemistry troll Memes

The chemistry troll strikes again! This meme hits right at the heart of chemical impossibility. Nitrogen monoxide (NO) exists, but "nitrogen monoxide" with an emphasis on "monoxide" suggests NO₂, which would actually be nitrogen dioxide. The person's friend responds with a simple "NO" - which is both a refusal AND ironically the correct chemical formula! It's the perfect chemistry dad joke hiding in plain sight. Chemistry students everywhere are either crying or high-fiving right now.