me of a time I got pulled over for a busted tail light. Then the officer asked to look at my tongue and said it looked like I was smoking weed.
I looked straight in his face like he was a complete idiot and said "Who told you that you can tell someone smoked weed from looking at their tongue, that's retarded!!! If you push this I'm gonna request your supervisor because I call BS and your supervisor knows that's BS."
Cop went to his car and gave me a fixit ticket. I was just dumbfounded at how this cop asked to see my mouth and that somehow they can tell I'm on drugs. Ridiculous!!!!
It's a bating technique 100%. Cop makes a lie about how they can tell you are on something which is used to get you to confess.