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What does "41" mean in slang? Here's how a seemingly random number became Gen Alpha and Gen Z's latest inside joke after 6-7.

Paul Anthony Jones














Ever wonder why your dime and quarter have tiny ridges on the edge? It’s not just for grip—it’s a genius invention from the 1600s that saved the world’s currency from thieves.

Matt Soniak, Nitya Rao










Elisabeth Moss as Peggy in "Mad Men."

Where did we get Dick from Richard? Why is Bill short for William? Here are the origin stories behind 11 popular and particularly confounding nicknames.

David K. Israel, Eden Gordon