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I did something like that once, we had gone on holidays and one of the guys took a pic of one of the others taking a piss, forgot about it and got it developed
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even better was one while I was in the army, we had a shot taken of the troop (about 25 guys) standing all over a tank, in all our gear, then a second shot of all of us mooning the camera, when we got it developed the shop did a second print of it as an enlargement and stuck a gold sticker "Kodak Moment" on it
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