The chemistry pun here is explosive. When a student responds "Na, sir" they're using the chemical symbol for sodium (Na) while simultaneously saying "no sir." The teacher's face transforms from calm to horror because mixing sodium with water creates a violent exothermic reaction that releases hydrogen gas and can literally explode. That's why chemists don't tell sodium jokes. We just know there will be a reaction.
Explosive Wordplay In Chemistry Class
chemistry-memes, sodium-memes, pun-memes, explosion-memes, periodic-table-memes | ScienceHumor.io
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