To attempt or succeeding at dominating a conversation and pushing your agenda through, against the desire of the other parties involved.
Reporter Khalisah al-Jilani had an agenda to smear Commander Shepard with loaded questions during her interview, but the Commander bull-rushed the reporter on her own show and ended the interview on their terms.
Bull Shark Testosterone or "BST" is overpowered shit in Grand Theft Auto Online used mainly by people who are shit at the game. It gives you double damage and health for 60 seconds. It also makes basically every weapon in the game 1-2 shot kill. Literally the best idea Rockstar has come up with.
GTA Online Player #1: "Dude I shot this guy like 25 times and he kills me one shot. WTF?!"
GTA Online Player #2: "He is using Bull Shark Testosterone dumbass."
Where people expect financial investments to rapidly increase, like in the economic boom of the eighties. It is so called, because masses of first-time investors rush head-first into the markets with thier money, expecting to amass riches beyond belief.
Japan's 1980's bull market was so good that, in 1989, Japan was expected to overtake the United states as the world's richest economy. The reccession of the 90's prevented this.