Sentence:  Jeff swaggered over to Ned Beaumont, threw his left arm roughly around his shoulders, seized Ned Beaumont's right hand with his right hand, and addressed the company jovially: “This is the <WSD>swellest</WSD> guy I ever skinned a knuckle on and I've skinned them on plenty.” 
Meaning of the word marked with <WSD> tags:  Excellent.