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2.
Meaning everything, anything, nothing and something. Used when you have nothing else to say. Such as a very boring conversation:
Person 1: Hi
Person 2: Hi
(about 5 minutes later)
Person 1: Oblomov.
Person 2: ....hmmm....
by Georgie B May 15, 2004
 
1.
An extremely lazy person. (From Goncharov's novel, Oblomov)

Also, Oblomovism - somebody who suffrers from laziness.
Your ass is still on the couch? Damn, you just another Oblomov.
by Drake Studebake September 08, 2006