the term "for sure" was a ghetto response to a question that means yes
Hipsters have taken this term, and with irony turned the tough about-to-shank-you word into something that's insane amounts of adorable, like a puppie sleeping next to a kitten
"sexy tight jean wearer: "are you still going to meet me and katy at starbucks for our poetry session?"
'For sure', but in a totally adorable way
So are we meeting in the back of the alley today?
-Oh for suresies