what does S&M stand for I know what it is but what dio the letters mean?
206736
Good question, actually.  As others have said, it stands for sado-masochism.  The "sado" part comes from sadist, which was derived from the Marquis de Sade.  The term "masochism" was coined by the 19th century psychiatrist Krafft-Ebing based on Sacher-Masoch's writings (Sacher-Masoch was not pleased with this).  To simplify it: a sadist enjoys inflicting pain (or humiliation, etc.), and a masochist enjoys receiving it.
496745
It is a German word for "Single signature". Check out using \nwww.google.com Click on Language Tools (German -> English)
672338
It is PhD and it is the abbreviation for the LATIN words Philosophiae Doctor, which means to us, Doctor of Philosophy.
423083
I think it is written M with two horizontal bars.
6035
I agree with Felix above but am adding that it's origin is Latin and it means the way someone works (does things).  I am sure you have also heard it in movies and usually referring to Criminals when the Police say that's his or her M.O.  They are talking about the way they do something and that usually entails rituals or repeated actions.
493293
What comes once in a minute, twice in a moment, but never in a thousand years?\n\nI thought it was silence( you'd think so too)\n\nAnswer: the letter "m".
49145
Lol Ville Vallo as a devil worshipper that's hilarious. Ville has said that the symbol a heartagram is a symbol of love and hate and the balance of good and evil. Not many famous people belong to the Church Of Satan. Those who do, will willingly mention it. Also Ville did not change his infernal majesty to H.I.M. because people were getting upset they did it just so people wouldn't think they are apart of the occult. They change their name often at first it meant Hanson Is Murder then it changed to His Infernal Majesty Ville has said he may want it to stay him because of its simplicity.
539234
in the 1st picture in the 2nd row 2nd before the last in japanese the kanji is "mi" you can add ru,mas(masu), or te its a verb for watch or look.
352119
It is Master's Degree with an apostrophe.
562747
mmm.\n\nJesus = freakin' sweet.
657758
diablo=devil\ndios=god\nSo Jesus Cristo mi dios is JC my god in spanish
324976
We usually say that the three letters stand for "Save Our Souls" but it really has no sure meaning. SOS as a morse code is the fastest, because shortest and also the one that uses less power, to type and that is why it is used in times of danger.
486642
Well Sam can also stand for Samantha, Samson, etc. \n\nTry this site: http://www.behindthename.com/
499442
It comes from "libra" which describes the Roman unit of mass that is equal to the pound.  A lot of these abbreviations tend to come from Roman/Latin roots which explains why they seem so weird.
388084
Phillipians 4:13 (KJV)\n\n I can do all things through he who strengthens me.\n\nomnia possum in eo qui me confortat\n\nomnia = all things\npossum = possible are\nin = through\neo = he\nqui = which or who\nme = myself or me\nconfortat = stregthens or comforts\n\nFrom the Latin Bible, or 'Vulgate'. Translated from the Hebrew and Aramaic by Jerome between 382 and 405 CE, this text became knowns as the 'versio vulgata', which means 'common translation'
210409
It means "The Christmans of the lizards" Es muy loco título. perro De nada
386957
Here are some:\n\nTesoro (my treasure) - good for female and male\nAmore or Amore mio (my love) - good for female and male\nDolcezza (sweetie) - more for a girlfriend\nCara / Caro (Dear - female/male)\nPiccola (sort of like saying "baby", for a girlfriend)\n\nThese are the most common.\nIt really depends on who the term is for, as Italian has genders. It also depends on the relationship meaning whether it's for a girlfriend/boyfriend, a friend, a relative (mother, sister) or a child.