Brain freeze is practically a rite of summer. It happens when you eat ice cream or gulp something ice cold too quickly. The scientific term is sphenopalatine ganglioneuralgia, but that's a mouthful. Brain freeze is your body's way of putting on the brakes, telling you to slow down and take it easy.
Me: *eats ice creamquickly*
Also me: oh frick i think ive got sphenopalatine ganglioneuralgia
Sipping on a Seven Eleven Slurpee I got sphenopalatine ganglioneuralgia and almost crashed my pimped out ride into a tree and I'm glad I didn't cuzz Xzibit would have been mad pissed yo!