My boyfriend bought me a "Panty Pal Vibrating Heart" for my 19th birthday, along with some tight fitting white cotton "Sloggi Knickers". I put the undies on with a mini skirt, while my boyfriend placed the Panty Pal inside and attached the magnetic heart piece on the outside of my knickers. We then jumped in the car for a drive to town. After we'd gone about half a mile my boyfriend reached over and turned the Panty Pal on, I immediately gasped at the sensation in my knickers, while he just smirk away to himself. I began to pant and moan after a little while, which soon became uncontrollable, as I orgasmed in my now damp little undies.