Usage: KICK *|<channel> <user> [<comment>]
  Kicks specified user off a given channel.  Only channel operators
  are privileged to use this command.  Channel operator privileges
  can be given to other users of channel using:
    MODE <channel> +o <user>
  and taken away with:
    MODE <channel> -o <user>
  KICK * <user> is just like the first usage but it always specifies
  the current channel.  So 
    KICK * idiot
  will kick 'idiot' off your current active channel.

  KICK can be very effective if used in a combination with
    MODE #channel +i
  and possibly
    MODE #channel +b.
  First line of defense should be IGNORE and KICK then then the
  channel can be made invite only, and if all else fails a person
  can be banned from the channel.
 
  The <comment> is to supply some reason for the kick to the user
  affected as well as to other people on your channel.

IMPORTANT NOTE:
  Be careful with your use of KICK and MODE #channel -o
  as they can throw the network permanently out of sync.  This
  generally occurs when two people are bickering about channel op
  status and de-op each other.  This generates 'Fake MODE' notices
  which are an indication that something is wrong.  The best way
  to avoid this is to not use ON and MODE together.

See Also:
  MODE
  IGNORE
