When you are "shoceth" about someting and don't know how to answer.
Person A: Yo My mom just died.
Person B: ...
when you dont know how to respond
dude : you dude how did go with your girl when she found out about your side chick?
other dude : ...
... equal nothing to say, mean that your relationship are broken
‘...’Tom murmured.He has nothing to said at this moment.
To shorten longer words that are obvious.
ok...
instead of saying okayyyyyy.
Usually used in text. The person who writes this is usually boring as fuck.
"Wow! You're pretty, would you like to go out some time?"
"..."