Mine

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