From Longman Dictionary of Contemporary Englishshoot from the hipshoot from the hipto say what you think in a direct way, or make a decision very quickly, without thinking about it first → shoot
Examples from the Corpus
shoot from the hip• Bolinger, a Harvard Professor shoots from the hip.• He saw himself shooting from the hip.• Still rolling, Forster shot from the hip.• They walk into rooms and shoot from the hip.• Students were content to shoot from the hip, as Ronen Wilk had put it. 