Trick Xor Treat

Boolean logic, but make it spooky! This meme perfectly illustrates logical operators using Halloween pumpkins as Venn diagrams.

Each operator does exactly what it promises - OR lights up everything in either circle, AND only illuminates the overlap, while XOR (exclusive OR) lights up everything except the overlap. The bottom row shows the negated versions of these operators.

The best part? The pumpkin faces actually match the logic. Notice how XOR gives you two separate smiles with no middle, while XNOR is just the opposite. This is what happens when computer scientists decorate for Halloween.

Somewhere a CS professor is saving this to their slides right now.