Boolean logic has never been so festive! This meme brilliantly visualizes logical operators using Halloween pumpkins in Venn diagrams.
OR shows both pumpkins lit up with their overlap, because either condition works. AND only lights the intersection—both conditions must be true. XOR (exclusive OR) lights everything EXCEPT the overlap—you can have one but not both. NOR says "nope to everything" with a completely dark result. NAND is basically "anything but AND" so everything except the intersection is lit. Finally, XNOR (exclusive NOR) is the evil twin of XOR—it only lights up when both conditions are the same.
Next Halloween party ice-breaker: "So... are you more of a NAND or XOR person?" Watch as everyone slowly backs away from you.