Did you eat an ice cream cone too fast? Slurp down a slushy at lightning speed? Here’s how to get rid of brain freeze fast: Cup your hands over your nose and mouth, and blow into them as if it was a cold day. The pain of brain freeze is caused by blood vessels constricting in your mouth’s soft palate. But breathing in warm air from your cupped hands will heat your soft palate, dilate those blood vessels again, and get rid of brain freeze in seconds.