<Li> Double dipping, another name for circular analysis in statistics </Li> <Li> A lifeline in the game show Who Wants to Be a Millionaire? in which a contestant takes two tries at a question . If the contestant's first answer is wrong, he or she must choose from the remaining three answers, but if the second answer is also wrong, the contestant's game is over </Li> <Li> The practice of using both a tanning bed and a sunless tanning method to achieve a very dark tan </Li> <Li> Double dipping (Open Access), institutions (universities) pay for open access publishing of an article and pay for the subscription of this journals </Li>

Where did the term double dipping come from