Yearbook picture advice lol?

Ok so my face looks really chubby when I smile. I always look bloated. Not in all pics, but my yearbook pics always look nasty. Anyways, I don't like smiling with my teeth showing or anything but everytime I do the small smile, the photographer yells at me and is like "smile......smile.....SMILE!!!!!!!!!!!" So how can I tell the lady to shut up, without telling ehr to shut up. Anyone else get annoyed when the photographer yells at you to smile? I mean, it's my picture. :/