That's happened to me many times... I've had to write a report and sometimes an iceblock (what we call them here Down Under) will drip onto the paper and make a mess. Almost enough to make you want to eat the iceblock quickly but you get brainfreeze...
I find it funny that people talk about brain freeze all the time while I eat all kind of Icecream quickly without much problem. The only thing was that my teeth would feel so cold after ward and that's it.
It's Nostalgic because you don't make this kind of mistake as oftenly as you get older. By the time you are universitary, you'll have almost forgot about it enough to commit the same mistake again.