3 ms·If you are Malcom X and you create, let's say, a Facebook account, then your last name is X.by 0x4a42 6y agoIf you are Malcom X and you create, let's say, a Facebook account, then your last name is X.lisper 6y agoHarry S Truman's middle name was the letter S.dathanb82 6y agoDitto Ulysses S Grant (though he wasn’t born with that name).