Perhaps he has a salt deficiency.
My friend keeps licking me?
Just get a couple of lolli-pops and keep them around. Next time your friend does that? Just give him one and say : Here ya go !
Put some hot sauce on ya. That'll make her/him stop. ;-)
Is your friend a dog or cat? If not u have a weird friend
Is your friend by any chance . . . Mr. Owl?
Wherever they tend to lick put some lemon juice. That should make him/her stop.
I suppose licking you is much better than kicking you, so that's cool.