Those are quite mean channel messages. :d

For

    if ($nick ison #lol) || if ($nick ison #girl-ed) || if ($nick ison #blue_lover)|| if ($nick ison #vnm) {

and

      if ($chan isin %parts.list) {

, they weren't found anywhere else in this script, therefore irrelevant.

For the other "random kick message" part, you can simply use /var with tokens instead of using /set with $rand.

For example,

        set %gtfo $r(1,20) {
          if (%gtfo == 1) { msg $chan good riddens, $nick really freaks me right the fock out... }
          if (%gtfo == 2) { msg $chan I'm gonna miss that guy... bye $nick $+ ... }
          if (%gtfo == 3) { msg $chan It's a dark day when even $nick leaves us... }
          if (%gtfo == 4) { msg $chan OMG, $nick is finally gone...come on out guys... }
          if (%gtfo == 5) { msg $chan Damn, and I was gonna confess my love to $nick today...oh well... }
          if (%gtfo == 6) { msg $chan $nick won't be gone long... $chan is like a drug... }
          if (%gtfo == 7) { msg $chan $nick $+ , you can run, but you can't hide. }
          if (%gtfo == 8) { msg $chan so, $nick $+ , you just gonna leave without so much as a kind farewell? }
          if (%gtfo == 9) { msg $chan yeah, $nick $+ , you better GET RIGHT THE FOCK OUT!!!! }
          if (%gtfo == 10) { msg $chan god, I hate $nick $+ ... }

can be replaced with:

        var %gtfo good riddens, $nick really freaks me right the fock out...|I'm gonna miss that guy... bye $nick $+ ...|It's a dark day when even $nick leaves us...|OMG, $nick is finally gone...come on out guys...|Damn, and I was gonna confess my love to $nick today...oh well...|$nick won't be gone long... $chan is like a drug...|$nick $+ , you can run, but you can't hide.|so, $nick $+ , you just gonna leave without so much as a kind farewell?|yeah, $nick $+ , you better GET RIGHT THE FOCK OUT!!!!|god, I hate $nick $+ ...
        msg $chan $gettok(%gtfo,$r(1,$numtok($gtfo,124)),124)

.

        msg $chan $gettok(%gtfo,$r(1,$numtok($gtfo,124)),124)

can be also be rewritten as

        msg $chan $gettok(%gtfo,$r(1,10),124)

, since there are 10 kick messages in total.

[size=16]Use /help Token Identifiers for more information on tokens..[/size]

Needless to say, the halts are unecessary, and

  if ($nick == $me) { halt }
  else {

can be changed to

  if ($nick != $me) {