Where can a 15 year old buy a vibrator ?

im 15 and i totally am in desperate need for a vibrator. i CAN NOT even think about asking my mom, and i dont have any older siblings, and theres nobody else that i wouldnt feel completely akward in asking to buy one for me. ive tried everything else but i need a vibrator. i cant order one with my mom's credit card, she would obviously find out and freak on me. i dont know where i can buy one, does anyone know of a place i can go to ? please help, are there any shops or something ?