The simplest answer to the question is, 'Cause he can'.
Tomas likes to wake me up by kneading my hair, since I don't have fur and he thinks I'm his mother... I think that maybe he's stuck the two together somehow in his mind. Now if he wouldn't try to suck on my ear while kneading I'd be happy to let him knead, it feels kind of nice on my scalp since he doesn't use his claws.
Originally Posted by meistersar
Our three year old female cat tries to eat her own hair out of the cat brush after we brush her... though I've no idea why she does that other than she's just weird anyway
I've noticed a lot of cats do this, maybe it's because they recognize their smell on the fur? Maybe it's just the urge to groom.