The image uses jack-o’-lantern Venn diagrams to illustrate Boolean logic operations between “Trick” and “Treat”:
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OR → any part of the circles (Trick ∪ Treat) is orange — you get either or both.
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AND → only the overlapping region is orange — you must have both.
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XOR → the non-overlapping parts are orange — one or the other, but not both.
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NOR → everything except Trick ∪ Treat is orange — neither trick nor treat.
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NAND → everything except the overlap is orange — not both at once.
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XNOR → only the overlap and the outside are orange — both or neither.