Used in an argument when someone has made a good point and the other person doesn't know what to say.
Used before a sentence when someone is not sure what to say. Usually repeated by another person.
Used by teenage girls and gay men in the middle of a sentence to emphasize a the point. See like
Used by someone in a conversation if it doesn't matter.
Used by someone in a conversation if they don't care.
Man 1: But you're a dick!
Man 2: So?
Girl: Wanna go to the cinema?
Gay: That is like so good.
Man: But it's raining outside!
Man: I have a big willy.