Shit got hefty 

When something extreme happens. This could be something good or bad, depending on its use. It doesn't always have to be used in the past tense either.

Joe: "Some guy called me a douche at the club, that's when shit got hefty."
Mike: "Oh man I bet you kicked his ass!"
Joe: "Yup"

Tom: "Hey Joe! You douche."
Joe: "That's it, shit is about to get hefty!"

Shit got hefty by KenzelC April 8, 2010