I'll just paste this contribution from Carsten Haitzler (rasterman):

  #include <stdio.h>
  #define blowjob sex
  #define sex int
  #define joint char
  #define reefer joint
  #define froob(y) sizeof(y)
  #define smoke printf
  #define on_the_beach main
  #define suckitin(puff) {sex l;l=strlen(puff);memfrob(puff,l);}
  #define bacon 0xf
  #define eggs 0x3
  #define frubfrub(x) scanf("%i",&x)
  sex on_the_beach(sex everywhere, joint **is_good){sex *blum;joint *blimblim,
  *vendu, buttox;joint ganja[]="c\012BK\\O\012\017C\012H_^^ER\012DE]\040\000";
  reefer pot[]="bE]\012GKDS\012H_^^ER\012NE\012SE_\012BK\\O\012\040\000";
  suckitin(pot);smoke(pot);frubfrub(pot);suckitin(ganja);blimblim=(joint *)
  &buttox;blimblim+=froob(sex);vendu=blimblim;blimblim-=vendu-(joint *)
  &buttox;*(vendu-froob(sex))+=(((buttox<<1)|bacon))&eggs;blum=(sex *)blimblim;
  smoke(ganja,(*blum)&eggs);}

it even compiles. if you don't consider it art, it's definitely comedy.