The one that did it for me - I was in the car with my wife and a friend. We were driving down the highway and talking about the clouds we saw. And I said "I wander what kind of clouds those are. Like cumulus? Alto?"
The I take out my phone and type "types of" and the first auto-fill option that came up was "types of cloud" and I was like "there's no fucking way that just happens to be the highest suggested search prompt"