= D =
[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!".
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.