noun. Douchebag plus buttfuck minus fuckbag.
Related terms: douchetard, douchewad, douchefuck, douchehead, douchenuts.
Real citation: "Me: yes- your reputation definitely precedes you. what's db stand for? dickbrain? douchebutt? dilbert? or just dipshit boy?"
(July 31, 2002, http://groups-beta.google.com/group/rec.audio.pro/msg/3f249aa9ef7ec717?hl=en&)
Made-up citation: "Real parents have named real children 'Winner,' 'Loser,' 'Harvard,' 'Shithead,' and 'Lemonjello,' so when the hell are some creative parents going to get off their ass and slap 'Douchebutt' on some deserving little nipper? How long, oh Lord, how long must I wait?"