Big Swinging Dick

Big Swinging Dick

(Very) informal and somewhat derogatory; a trader who believes his methodology is perfect and will always result in sizable profits. However, it originally was a term of self-designation for major bond-traders. The term was popularized by the book Liar's Poker, which describes the author's experience as a bond trader on Wall Street in the 1980s.
References in periodicals archive ?
SO this is what it looks like when a Big Swinging Dick is castrated.
He is the Jock, the Scholar, and the Big Swinging Dick all rolled into one.
A self-described consensus builder - no Big Swinging Dick, as Michael Porter of "Liar's Poker" fame called Wall Street's 1980s kingpins - Corzine entered the fray with a commitment to launch a wholesale re-engineering of white-shoe Goldman.
If he could make millions of dollars come out of those phones, he became the most revered of all species: A Big Swinging Dick.