Used as an alternative to "fuck" and is associated with a high amount of effort to complete a task.
Bro: "Bro you want to go clean my car"
"Skaf that!"
The width of an individual female breast defined as the circumference of their arm times by 1.5
Friend: Using Marshall's Theory, those knockers are around 17cm each
Friend 2: Dang bro, How'd you figure?