Has it ever occured to you that you are going to react on this discussion?

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Ok, I have to agree the title is very weird. I wrote it like that on purpose. What I would like to know is do you sometimes ask questions or say things during dates or chitchats that are weird with the purpose to immediately be able to perform an action, for example putting your hand on someone's leg without getting kicked in the nuts/slapped against the head? And on top of the aforementioned question: What other techniques do you use?