It doesn't offend me when someone askes is my hair mine. But after I have said YES, some don't believe me and do things like that guy and stick his fingers in the back of my head, I am ready to start cuttin' folks up in here! 
(RELAX, RELATE...RELEASE)
Even though I have long, thick hair, I have worn a track or to myself. I am too much of a chicken to dye my hair, so I use the tracks for a little splash of color. If I don't like it, I ain't stuck with it.