(verb) The act of collecting various discarded and unwanted scrap metals and taking such precious metals to a scrapyard for a small but helpful monetary reward. Scrapping is oftentimes very hard and dirty work for a relatively small payoff.
Johnny had been unemployed for a stretch now and was struggling to find any decent work. He had lately taken to the toil and trouble of scrapping so he could at least keep his cigarette habit and continue smoking.
The act of trolling in a similar vein to writer/director Rob Schrab. It is often done by asking a redundant question in response to something which includes the answer to the question.
John: Hey Bill! Wanna go see a motion picture?
Bill: I can't, I'm currently hermit crabbing Cindy's basement bunker
John: Still?
Bill: Yeah, she hasn't evicted me yet
Joe: "Hey, want to go crabbing?"
Jim: "What? Isn't that wen a girl sends nudes in this /\_/\ position?"
Joe: "What the fuck? Did you find that on the weird Urban Dictionary website where nine year olds turn every word into some sort of sexual thing? Crabbing is when you go fishing for crabs, dumbass."