dogpile
 v.

    [Usenet: prob. fr. mainstream ?puppy pile?] When many people post
    unfriendly responses in short order to a single posting, they are sometimes
    said to ?dogpile? or ?dogpile on? the person to whom they're responding.
    For example, when a religious missionary posts a simplistic appeal to
    alt.atheism, he can expect to be dogpiled. It has been suggested that this
    derives from U.S. football slang for a tackle involving three or more
    people; among hackers, it seems at least as likely to derive from an
    ?autobiographical? Bugs Bunny cartoon in which a gang of attacking canines
    actually yells ?Dogpile on the rabbit!?.

dogpile

   (Usenet, probably from mainstream "puppy pile") When many
   people post unfriendly responses in short order to a single
   posting, they are sometimes said to "dogpile" or "dogpile on"
   the person to whom they're responding.  For example, when a
   religious missionary posts a simplistic appeal to alt.atheism,
   he can expect to be dogpiled.

   (1994-12-08)