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TIL that you are not supposed to rinse your mouth with water after brushing teeth or using a mouthwash, because the fluoride coating on your teeth helps protect against cavities and rinsing your mouth after dilutes the fluoride, making it ineffective. Instead, you should wait, preferably 20 minutes.

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ZpLap TIL that in Japan, it is common practice among married couples for the woman to fully control the couple's finances. The husbands' hand over their monthly pay and receive an allowance from their wives.
n5VW TIL America sends Cuba a check every year for the Guantanamo Naval Base lease. The checks are not adjusted for inflation and are made out to the Treasurer General of the Republic, which no longer exists. Fidel Castro only ever cashed one, and stuffed the rest into a desk drawer.
G8kN TIL that Nelson Rockefeller, once Vice President of the United States, died at age 70 of a heart attack rumoured to be caused during sex with his 25 year old assistant. The New York Magazine quipped: “Nelson thought he was coming, but he was going”.
bx6E TIL that because the concrete of the Hoover Dam was poured into individual, rectangular shaped sections–rather than with a single, continuous pour–the physical dam itself will survive up to 10,000 years and be one of the last remaining visible and recognizable monuments of humans on the planet.
7NEX TIL Justice Antonin Scalia died on the same ranch they filmed “There Will Be Blood” and “No Country For Old Men”