bone-smashing

verb -

an form of self-harm to accentuate one's self appearence, most notably their jawline. Branching off looks-maxing, bone-smashing is the action to hammer in one's jawline to its most jaw crackling mews, creating a more sharper toned look, you'll definitely catch all the men in town.

Sean- "look at what my bone-smashing lesson did to my jawline today."

Toeneigh- "is it supposed to be dangling like that?"

Sean- "you wouldn't understand."