For example - "you came out here and absolutely smashed it" or "you smashed it ... that was a beautiful dish"
(SSYTYCD & Masterchef respectively)
I looked it up on the Urban Dictionary site (mistake!) and apparently it means "when u do summet really cool/good" ... so by natural inference, it also means that you absolutely smashed it with grammar and spelling ... and by smashed I mean completely broken!!
Anyhoo, I'm not advocating some kind of nazi codified Standard English bullshit ... but I bet this comes from America via TV/Film/Gossip websites ... and that trully grates me ... yes I admit it ... I'm still a yank basher!! So if you want to go me over that (see I can do the yoof speak!!) then just STOP!
(ps ... for the astute amongst you, the pics from my last post and this one were taken on the same day - Office Christmas party 2009 - and I've been dying to use them in some way - spurious or otherwise)