He's a headcase as Chris Brown adds another head tattoo!

Chris Brown has added yet another tattoo to his head.Remember he added one only a few days ago which was the face of a female.This time ,he had a bull tattooed on his head..while 
sharing the picture,Chris Brown aptly titled it-  I do what the f**k I want! Abi? Afterall it's his head not yours or mine! lol..a headcase indeed!