Mine

on *:TEXT:[!@]blacklist*:#rips: { 
  if ($nick isop #rips) || ($nick ishop #rips) { 
    set %blacklist [ $+ [ $2 ] ] 
    ban -k #rips $2
    msg #rips 7~ $2 12has been add to the blacklist7~ 
  } 
}

on *:TEXT:[!@]deblacklist*:#rips: { 
  if ($nick ishop #rips) || ($nick isop #rips) {
    unset %blacklist [ $+ [ $2 ] ]
    mode #rips -b $address($2,1)
    msg #rips msg #rips7~  $2 12has been deleted from the blacklist7~ 
  }
}
on *:JOIN:#rips: {
  if (%blacklist [ $+ [ $nick ] ] == %blacklist [ $+ [ $nick ] ]) {
    mode #rips +b $address($nick,1)
  }
}