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An elaborate display, usually for selling or other persuasion; dog and pony act: There just hasn't been time to arrange the kind of show-and-tell that attracts media attention/ No one seems to have been impressed by the show-and-tell
[1970s+; fr the name of an elementary-school teaching technique of the late 1940s where pupils exhibit and explain things]
floating theatre that tied up at towns along the waterways of the southern and midwestern United States, especially along the Mississippi and Ohio rivers, to bring culture and entertainment to the inhabitants of river frontiers. The earliest of these entertainment boats were family-owned ventures into regions where theatres had not gone.