Arnold Schwarzenegger left his motorcycle at home and hit the mean streets of Santa Monica on his bike Saturday, his 64th birthday.
The former Governator, wearing a white T-shirt, rode with three of his buddies, all of whom are in his regular motorcycle posse.
PHOTOS: Arnold Schwarzenegger Goes On a Birthday Bike Ride
Schwarzenegger and his estranged wife Maria Shriver are moving ahead on their divorce, and it should be finalized long before Arnold starts collecting Social Security next year.
By the way, Arnold has just under 13,000 Twitter followers. Maria has just passed 852,000.