Shaking head

Billy applies to the police department. The cop says, "What's your height?" Billy reads off his palm, "Six foot, three inches." The cop says, "What's your weight?" "203
pounds." "And can you tell me your first name?" "William", Billy replied shaking her head. The cop says, "What was that you did with your head like that?" Billy goes, "Happy birthday to you, Happy birthday to you."