<P> In 1935, beer cans with flat tops were marketed, and a device to puncture the lids was needed . The same term, "church key", came to be used for this new invention: made from a single piece of pressed metal, with a pointed end used for piercing cans--devised by D.F. Sampson for the American Can Company, who depicted operating instructions on the cans, and typically gave away free "quick and easy" openers with their beer cans . </P> <P> Paint Can Openers include bottle openers . </P> <P> The term in the beverage - opening sense is apparently not an old one; Merriam - Webster finds written attestation only since the 1950s . Several etymological themes exist . The main one is that the ends of some bottle openers resemble the heads of large keys such as have traditionally been used to lock and unlock church doors . The other is that jocularity helped propel the popular spread of the name, with the joke being that opening a beer is an activity that usually has little to do with pious or ecclesiastical circumstances--historical connections between monasteries and brewing notwithstanding . </P> <Ul> <Li> <P> Church keys in the figurative sense (left two images) </P> </Li> <Li> </Li> <Li> <P> Church keys in the literal sense (right two images) </P> </Li> <Li> </Li> </Ul>

Where did the term church key originate from
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