Brain freeze is really you feeling cold in your esophagus but since you don’t usually feel pain there, you’re not used to it so it feels more like the top of your head. I don’t feel the freeze in my head, I feel it in my esophagus, and no amount of holding slushy in my mouth will give me brain freeze.
Brain freeze isn’t actually on the roof of your mouth or sinuses. It’s actually a cold feeling in your esophagus that you feel in your head because you aren’t familiar with pain in your esophagus. Drink a big mouthful of a slushy very fast and then immediately put warm water in your mouth (don’t swallow the warm water) and you’ll still get brain freeze. BTW, I’m rather odd since I feel brain freezes in my esophagus and not my head.
Brain freeze is really you feeling cold in your esophagus but since you don’t usually feel pain there, you’re not used to it so it feels more like the top of your head. I don’t feel the freeze in my head, I feel it in my esophagus, and no amount of holding slushy in my mouth will give me brain freeze.