Something

on *:text:!gag*:#:{
  if ( !$2 ) { notice $nick Sorry you must specify the nickname, syntax: !gag <nickname> }
  else (($nick ishop $chan) || ($nick isop $chan)) { mode $chan +b ~q: $+ $address($2,2) }
  else { notice $nick Sorry you must be halfop'd or op'd }
}