My cat Paloma will do sort of the same thing.  I think she means to be
affectionate, but it does get a little rough sometimes.  I never scold her
as I don't believe she means to be mean.  I have heard and read that some
cats have a low threshold for touching and tend to get excited.

Sometimes when she gets wound up, her eyes are like large black saucers and
looks for a place to "get me", usually on my right shoulder for some reason;
habit I guess.

I guess it is just a quirk.
Shirley

Well, if my owner slept through two weeks, no food, no water, what do you
expect? LOL

I'm just curious how you sleep so well...

Smokey does this all the time.

When we are playing "rough" with him (not hurting him, just
tussling--he seeks this kind of play because, as a feral, he's used to
stalking and fighting prey, and we don't want him tormenting Nox and
the kittens to get out his urges for rough play, and he knows enough
not to inflict injury on us) he puts a paw on each of our cheeks,
raises his mouth to our nose, and works his jaw up and down in an
imitation of a bite--but Smokey never actually breaks skin.  It's a
light touch of tooth to skin to simulate "I'm biting you now, ok?"

Smokey does this to show off "how fierce he is."

It's not so much an attack, as an aggressive posturing.

I might be more concerned about this if the cat is biting for real,
causing pain to you or drawing blood.  If that's the case, then he's a
little too excited and needs to be given the opportunity to calm down.
Maybe he is overstimulated.

Smokey once--only once--actually bit.  He spent the next few hours
crying and following us around to make sure we still loved him after
the bad thing he had done.  He knew damn well he'd done something bad,
and...what if bad kitties don't get to live inside any more?!  He's
never bit since.

--Enfilade