So since I am so interested in educating the public on things that might NOT matter. Here it is:
According to the wiki this shyt happens because:
Theory One: the cause of ice-cream headaches is explained by increased blood flow to the brain through the anterior cerebral artery, which supplies oxygenated blood to most medial portions of the frontal lobes and superior medial parietal lobes. This increase in blood volume and resulting increase in size in this artery is thought to bring on the pain associated with an ice-cream headache.
When the anterior cerebral artery constricts, reining in the response to this increased blood volume, the pain disappears. The dilation, then quick constriction, of this blood vessel may be a type of self-defense for the brain.
This inflow of blood can't be cleared as quickly as it is coming in during the ice-cream headache, so the blood flow could raise the pressure inside the skull and induce pain that way. As the intracranial pressure and temperature in the brain rise, the blood vessel contracts the pressure in the brain is reduced before reaches dangerous levels.
Theory Two: An ice cream headache is the direct result of the rapid cooling and rewarming of the capillaries in the sinuses. A similar but painless blood vessel response causes the face to appear "flushed" after being outside on a cold day. In both instances, the cold temperature causes the capillaries in the sinuses to constrict and then experience extreme rebound dilation as they warm up again
What does this all mean? = IT hurts like a mother!
How to prevent it:
They say to put your tongue at the roof of your mouth.... FOR me it didn't work @#$%
Prevent cold food from touching the roof of your mouth... ok really.... and miss all the fun
Warm the roof of your mouth with something warm... really buddy if I wanted something HOT I would NOT be reading your column about Brain freezes.
Wait it out. ... REALLY.... no shyt sherlock..... really
So now you know..... see you learned something today.