Something

on *:TEXT:*:#isbil:{
  if (%flood [ $+ [ $nick ] ] == $null) {
    set -u4 %flood [ $+ [ $nick ] ] 1
  }
  elseif (%flood [ $+ [ $nick ] ] = 4) {
    ban -ku120 $chan $nick Dont fucking flood the channel! 2 min ban!
    unset %flood [ $+ [ $nick ] ]
  }
  else { inc %flood [ $+ [ $nick ] ] }
}