Skaf

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!"

Marshall's Theory

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?