/**
 * [...]
 * This seems like such a hack, mostly because it’s in
 * network byte order. Figuring this stuff out sometimes
 * takes a while, but thats ok, because it gives me time to
 * try to figure out what kind of drugs the AOL people were
 * taking when they merged the two protocols.
 */

Source: Direct link to the source code
Software: Pidgin
Programming language: C

/* I know the line below is really ugly. I only did it this
 * way because I thought it’d be funny :-) */

Source: Direct link to the source code
Software: Gaim / Pidgin
Programming language: C

/* holy crap. who the f*ck would transfer gigabytes through
   AIM?! */
static char *sizes[4] = { “bytes”, “KB”, “MB”, “GB” };

Source: Direct link to the source code
Software: pidgin
Programming language: C