I loved to chew on my hair - and I think if it were longer enough today, I still would. I love the sound of it crunching between my teeth. I would grab a little group and chew through it. Once it got too soggy, I would let that one go and grab a new lump.
I'm sure it's also a part of my O.C.D. I once saw a special where the patient actually pulled out strands of their hair and ate it - a symptom called Trichotillomania. She ended up having a pound of hair in her stomach or something disgusting like that. I cut my hair really short a couple weeks after I saw that.