Those little needle teeth can begin to hurt after awhile! A friend of mine's cat had this problem. Is Solomon a declawed cat? Biting can be a behavioral problem after a cat has been declawed. When my friend's cat had this problem, we looked around for advice on what to do. One thing we found that was interesting was to act like you're mamma cat. When Solomon bites you, ignore him! He knows that he gets attention when he does that. If he does it again, grap him by the scruff and growl like mother cat would, instigating that it's not appropriate to bite, put him down and walk away. Try to initiate play during times he does not bite, and give him a treat. After awhile, he'll drop the biting habit and it will be pain free play time!
Good luck and let us know what happens

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"In a cat's eye, all things belong to cats." - English proverb