People look up random words all the time, but sometimes a lot of people look up the same word—usually because of something in the zeitgeist, such as a shared experience or event.
Communism spiked on 4/4, after the BBC uncovered a previously unseen video of Kim Philby giving a secret lecture to the Stasi, the East German Intelligence Service, in 1981.
The announcement on April 5th that WhatsApp had added end-to-end encryption sent people to the dictionary to look up the word.
Americans looked up rotten borough on 4/6 after two articles used the term—one which said a previous Clinton win could be attributed to a rotten borough, and another which suggested Trump might win the Republican nomination if he could pick up "some rotten-borough congressional districts" in California.
However: Why did lookups for doobie spike on April 6th? Yes, we have a definition for doobie. No, we have no idea why so many people were looking this up on a Wednesday afternoon. If you think you know why, let us know in the comments below.