Something

alias mb {
  /set %m 1
  :jump1
  /set %mnick $nick(#,%m)
  if (%mnick != $me) {  mode # +b %mnick | kick # %mnick }
  if (%mnick == $null) goto end
  if (%mnick == $me) { /inc %m | goto jump1 }
  if (%mnick == %except) { /inc %m | goto jump1 }
  inc %m
  goto jump1
  :end
}