What is associated with: 2 1886 twitterers please im killing someone now i have a medical degree now im being killed which kills me as well?

Based on the clue '1st used in a novel about 90 years ago it refers t...', what is the answer? What is associated with: 1st used in police work by berkeley cas chief august vollmer in the 1920s this tool measures p… Based on the clue '1st wood thats mentioned in this land is your land', what is the answer? Based on the clue '2 18 by 3 38 wafer of plastic that improperly used...', what is the answer? Based on the clue '2 3 or this number means you rolled craps so give ...', what is the answer? Based on the clue '2 4 6 8 homers crime was very great great meani...', what is the answer? Based on the clue '2 4 6 8 this garp man who also wrote setting free ...', what is the answer? What is referred to by '2 4 6'?