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TIL 7-Eleven owns the trademark to the word 'Brainfreeze'. The medical term is a cold-stimulus headache.

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nneo TIL President John F. Kennedy was a methamphetamine addict and suffered from a delusional “psychotic break” in the Carlyle Hotel.
NXyZ1 TIL that Stalin didn't like constructivist architecture and under his rule cheap mass-produced buildings were de facto banned from being built in large cities, which instead were filled with grandiose buildings with detailed façades and labour intensive masonry.
0wWb1 TIL 'Acquired tastes' are, in fact, real: we are psychologically conditioned to prefer sensations we have experienced before, even if it wasn't pleasant.
a8JQA TIL that in the hours just before and after Arthur C. Clarke's death, five supernovae were observed, a record, with one of them being the farthest object ever seen with the naked eye
Egx8w TIL dolphins actually have names for one another, using a unique whistle to distinguish between different members within their pod.