on $*:text:/^brb|away */Si:#P.C: {
  /msg $chan 6  $nick  will be right back. He had to go for $&
    this reason: 12 $2-
  .timer $+ $nick 0 1 /inc %time. [ $+ [ $nick ] ]
}
on $*:text:/^bk|back /Si:#P.C: {
  /msg $chan $nick is back, he was away for $+(,%time. [ $+ [ $nick ] ]), seconds. $&
    Welcome back $nick
  .timer $+ $nick off
}