Your instinct, then, is going to be to use it. You’ll step harder on the throttle, and when you step harder on the throttle, you’re going to cause one of two things to happen: understeer or oversteer. The understeer is caused by too much weight transfer to the rear; the oversteer is caused by asking the rear tires (in a rear-wheel-drive car) to do too much, causing power oversteer.