Prefix meaning "obligatory". Most commonly used when saying something otherwise offtopic in places like Slashdot where that is frowned upon. Can be used where something is expected but might otherwise be missing.
Jessica Simpson is an airhead.
ObTopic: Linux is cool.
ObDrama: But she said she liked him instead.
ObLanguagePolice: There is no such word as "alot".
ObTopic: Linux is cool.
ObDrama: But she said she liked him instead.
ObLanguagePolice: There is no such word as "alot".
by fax4voice3 December 28, 2005
Get the obmug. Stands for Optimal Breast Size. OBS is the point at which the female chest is near perfect in dimensions; they are neither too small or too large, as Goldy Locks would put it, they're juuust right.
by David James Saniti February 28, 2008
Get the OBSmug. 
by greg bush June 14, 2008
Get the obmug. when ob roasts you
by bitchhhhh69 April 7, 2019
Get the OBedmug. by chezmiko March 12, 2005
Get the obesmug. 