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The photo series titled Insert Coin by Pablo Alfieri, a photographer and artist hailing from Buenos Aires, Argentina, will instantly put minds in the gutter. Full of sexual connotations, it was created for a public talk Alfieri is giving at Insert, a conference where art meets technology, fashion and movies. Clearly, he's having a little fun with this one.

Insert Coin by Pablo Alfieri is comprised of colorful images of almost purely inanimate objects. It concentrates on the classic hand gesture that symbolizes the act of coitus. From a thick cactus encircled by an inflated silver tube to a golden hand interacting with a lipstick case, the images are as deceptively innocent as they are completely raunchy.