Mine

on *:TEXT:!Blacklist:#: {
  .amsg $2 has been Globally blacklisted!
  set %re [ $+ [ $2 ] ] $3-
  mode $chan +b $address($2,2)
  kick $chan $2 You have been globally blacklisted by $nick $+ !
}
on *:JOIN:#: {
  if (%re [ $+ [ $nick ] ]) {
    mode $chan +b $nick
    kick $chan $nick You are on the blacklist Reason : %re [ $+ [ $nick ] ] -- Message me to appeal.
  }
}