Acronym for "Dirty Bunch Of Bitches." This can refer a group, or even one person if their bitchiness is equivalent to what one would expect from a group.
I'm so sick of Traceytalking about me behind my back; she is such a DBOB.
i woke up and picked up bob and billy then we went to starbucks then we went to the mall to meet up with john and jane. then i had to drop off billy and jane. then me bob and john went to the movies. and then i went home, and called jane. after that talked online to john. and then i went to sleep.