A series of 3 periods that, like the word "Hmm" can be used as a space filler during an awkward silence. However, they are also used to create suspense for usually unimportant situations, to answer a stupid question, counter a stupid comment, or simply to piss people off because of overuse.
Tim: I need to say something...
Holden: What?
Tim: Im hungry.
Holden: Dumbass.
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Tim: Yep.
~10 Minutes later~
Tim: ...
Holden: Yeah?
Tim: Hey.
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Tim: Dude, I saw a flying cat!
Holden: ...
Tim: No, Seriously!
Mainly used in chat rooms or forums, in response to a sentence or phrase which cannot be replied to in any other way because it is incredibly stupid or strange.
IneedaGF: "I sniff my grandma's panties and wear her bra!"
GlitterBabe: "...!?"
KingOfTheDamned: "..."
Chaos: "!...!"
DarknessAngel: "WHAT!? ..."
Matt999: "!?..."
AfroPimp2004: "WTF YO ..."
n00b4eva: "lol".