Arnold Schwarzenegger's son Patrick changes his last name (on Twitter)

arnold-and-son-gi.jpgLooks like at least one of Arnold Schwarzenegger's children isn't too psyched to find out dad fathered a surprise sibling with a long-time household staffer.

At least we're going to assume that since on Tuesday (May 17) Schwarzenegger's 17-year-old son, Patrick, changed his last name to Shriver (his mother's). Well, on his Twitter account.

This despite his latest message, which reads, "some days you feel like s***, some days you want to quit and just be normal for a bit, yet i love my family till death do us apart. #family"

Earlier in the day, news broke that Schwarzenegger admitted to fathering a child with a member of his household staff.

In a statement, the actor and former California governor says:

"After leaving the governor's office I told my wife about this event, which occurred over a decade ago. I understand and deserve the feelings of anger and disappointment among my friends and family. There are no excuses and I take full responsibility for the hurt I have caused. I have apologized to Maria, my children and my family. I am truly sorry. I ask that the media respect my wife and children through this extremely difficult time. While I deserve your attention and criticism, my family does not."
Photo/Video credit: Getty Images