I don't know. I saw a summary of what BDA means over on krypton site, for Clark's forum, and Clark is mostly really popular there. That's why I think it's sometimes used as a term of affection.
Magnificant Bastard definitely originated with Omar, but I don't know about BDA
(no subject)
Date: 2006-02-20 11:28 am (UTC)Magnificant Bastard definitely originated with Omar, but I don't know about BDA