Dear Shadowfox:
My Girlfriend keeps wanting to drive my car.. with me in the passenger seat! That always bugged me... how do I teasingly tell her that I don't want her to do that.. yet still be within the realm of "Teasing" and not "Being rude" ?
Dear Reader:
Try saying "I don't think my health insurance would like that" or say "My Car Insurance doesn't cover 'The-Driver-Just-Wanted-To-Drive-MY-Car-For-A-Change' ".