No sir I didn't know

Paul and his wife, Tina, are driving down the road when a cop pulls them over. The cop says to the man: Do you know that you were speeding? Paul replies: No sir, I didn't know I was speeding. Tina then yells: Yes you did, you knew you were speeding I've been telling you to slow down for miles. Shut up! Paul says to his wife, shut the hell up, just sit back and be quite. Then the cop says: Well,
since I've got you pulled over did you know that the tag on your license plate is expired? No Sir, I did not know that, the man replies. His wife yells: I've been telling you to go get it up to date for 2 whole months now! Sit back and shut up, mind your own business! Paul yells to his wife. Curios, the cop walks over to the woman's side of the car and asks her: Does he always talk to you this way? Tina replies: No, only when he's drinking!