Rod Stewart's hair isn't the only thing sticking straight up.
The raspy-voiced musical legend wasn't in the holiday spirit on Wednesday when he gave the cameraman a one-finger salute while vacationing with his family in Cagnes-sur-Mer, France, in these just-received photos on RadarOnline.com.
The 66-year-old Downtown Train singer eventually gets playful with the camera while touring with wife Penny, 40, and sons Alastair Wallace, 6, and baby Aiden, 11 months.
Not on the family vacation is daughter Kim, who just had a baby girl of her own in August with short-term fling Benicio Del Toro.
Fun fact: Rod has eight kids altogether -- his oldest, daughter Sarah Thubron Streeter, is about seven years older than his wife Penny.