Question

define a double touch??????????????????????​

Answer 1

Answer:

A mechanism in a pipe organ for causing one effect when keys or pistons are fully depressed and another when they are depressed only partly....

Answer 2

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I think It came from the popular Inst*gram app. When you "double tap" or quickly tap your finger on a picture twice, it shows that you liked it. People generally use it as slang when the see an attractive person and want to "double tap" them.