on *:TEXT:*.an*:#:{
  if $address($me,2) == $address($nick,2) {
    if ($2 == doubt) { set %2 $3 | $3 == $nick | msg $chan Doubt it }



EXAMPLE:
Hankj: .an doubt hello
Hello: Hi
Random_Pkers: Doubt it
Hello: Hi
Random_Pkers: Doubt it
Hello: Hi
Random_Pkers: Doubt it
Hello: Hi
Random_Pkers: Doubt it
Hello: Hi
Random_Pkers: Doubt it