on impulse
Without prior consideration; spontaneously, impulsively
I don't believe in guilt; I believe in living on impulse as long as you never intentionally hurt another person. And don't judge people in your life. I think you should live completely free. Angelina Jolie
There is more simplicity in the man who eats caviar on impulse than in the man who eats Grape-Nuts on principle. G. K. Chesterton
I act on impulse and I go with my instincts. Gordon Ramsay
In turn, Clark Kent has a slightly dark side with which he comes to grips over time, made even worse by his experiences with Red Kryptonite, which causes him to lose his morals and act solely on impulse while under its influence. Source: Internet
Many big-ticket purchases are made on impulse or otherwise represent poor judgment. Source: Internet
He hasn't studied the jail or county at all, leaving him misinformed, uninformed and acting on impulse and knee jerk impression. Source: Internet