The term 'BIG JERK' can be broken down into four words: YANK (4 letters), SPASM (5 letters), TUG (3 letters), and ASS (3 letters). YANK is a verb meaning to pull or TUG at something suddenly and sharply. SPASM is a sudden, involuntary contraction of a muscle or group of muscles. TUG is another verb meaning to pull or draw with force. Finally, ASS is a slang term for a person who is rude, obnoxious, or mean. Together, these words describe someone who is a rude, obnoxious, and mean person who pulls or tugs at things suddenly and sharply.