Years ago, had a friend of mine from out of state that got stopped by a trooper on Interstate 85...he was doing 85-90.
Well, he has a great poker face. Trooper walks up and asked him if he knew how fast he was going. He told the trooper, "Yeah...around 85." Trooper asked him, "Do you know the speed limit through here?" Buddy tells him, "Yeah...it's 85." Trooper says, "What leads you to believe the speed limit is 85 mph?" He tells the trooper the red and blue speed limit signs read "85". Trooper told him, "Sir...those signs mark the interstate highway you are traveling on...they are not the speed limit." Dude tells him, "I'm sorry sir. I honestly thought those signs indicated the posted speed limit. It's kinda confusing, really. Yall should get that fixed so other drivers don't make the same mistake."
Trooper let him go with just a verbal warning.