Now, the right to lie doesn't extend to acting on that lie. A cop can say he's within his rights to search something, but he can't actually go for it without probable cause. Many cops try to get around this via the simple loophole of waiting for you to agree. Bill explained: "If he says he has a right to search something, but then asks permission, then he's making it up. That's a crucial distinction -- some officers are just polite, will ask, then walk right by you. If he actually has the right or obligation to search, then he will and you'll be unable to stop him."
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"Someone's been skipping leg day."
So the next time you're out on the town, lying to a cop about how much you had to drink or where you were the night Boss Tito was gunned down in his private airfield, keep in mind that the cop might be lying right back, and it's totally legal for him or her to do so.