From Merriam Webster's Collegiate Dictionary and Thesaurus

• SHIT

  [1, noun]

  Pronunciation: 'shit, interjectionally also 'shE-&t
  Etymology: (assumed) Middle English, from Old English scite; akin to Old English -scItan to defecate
  Date: circa 1585
  1 usually vulgar : EXCREMENT
  2 usually vulgar : an act of defecation
  3 usually vulgar : NONSENSE, CRAP
  4 usually vulgar : any of several intoxicating or narcotic drugs; especially : HEROIN
  5 usually vulgar : DAMN 2
  6 usually vulgar : a worthless, offensive, or detestable person
  - shit·ty /'shi-tE/ adjective, usually vulgar

  [2, verb]

  Pronunciation: 'shit
  Function: verb
  Inflected Form(s): shit or shat /'shat/; shit·ting
  Etymology: alteration of earlier shite, from Middle English shiten, from Old English -scItan; akin to Old High German scIzan to defecate and probably to Old English scEadan to separate -- more at SHED
  Date: circa 1720
  intransitive senses usually vulgar : DEFECATE
  transitive senses
  1 usually vulgar : to defecate in
  2 usually vulgar : to attempt to deceive : BULLSHIT

• PISS

  [1, verb]
  

  Pronunciation: 'pis
  Etymology: Middle English, from Old French pissier, from (assumed) Vulgar Latin pissiare, of imitative origin
  Date: 14th century
  intransitive senses sometimes vulgar : URINATE
  transitive senses, sometimes vulgar : to urinate in or on
  

  [2, noun]

  Date: 14th century
  1 sometimes vulgar : URINE
  2 sometimes vulgar : an act of urinating -- often used with take
  

• FUCK

  [1, verb]

  Pronunciation: 'f&k
  Etymology: akin to Dutch fokken to breed (cattle), Swedish dialect fokka to copulate
  Date: 1503
  intransitive senses
  1 usually obscene : COPULATE -- sometimes used in the present participle as a meaningless intensive
  2 usually vulgar : MESS 3 -- used with with
  transitive senses
  1 usually obscene : to engage in coitus with -- sometimes used interjectionally with an object (as a personal or reflexive pronoun) to express anger, contempt, or disgust
  2usually vulgar : to deal with unfairly or harshly : CHEAT, SCREW

  [2, noun]

  Date: 1680
  1 usually obscene : an act of copulation
  2 usually obscene : a sexual partner
  3 a usually vulgar : DAMN 2 b usually vulgar -- used especially with the as a meaningless intensive <what the fuck do they want from me>

• CUNT

  [noun]

  Pronunciation: 'k&nt
  Etymology: Middle English cunte; akin to Middle Low German kunte female pudenda
  Date: 14th century
  1 usually obscene : the female pudenda; also : coitus with a woman
  2 usually disparaging and obscene : WOMAN 1a
  

• COCKSUCKER

  [noun]

  Pronunciation: -"s&-k&r
  Date: circa 1891
  usually obscene : one who performs fellatio -- often used as a generalized term of abuse

• MOTHERFUCKER

  [noun]

  Pronunciation: 'm&-[th]&r-"f&-k&r
  Date: 1952
  usually obscene : one that is formidable, contemptible, or offensive -- usually used as a generalized term of abuse
  - moth·er·fuck·ing /-ki[ng]/ adjective, usually obscene

• TITS

  [noun]

  Pronunciation: 'tit
  Etymology: Middle English, from Old English -- more at TEAT
  Date: before 12th century
  1 : TEAT
  2 usually vulgar : BREAST -- usually used in plural