It's a recalling and churning up of experience and memory that can never be planned, relied on, or trusted. (tilted-arc.com)
Watch a video of the black holes churning up gas in the simulation. (newscientist.com)
The stuff that's churning me up inside involves other people and I don't have the right to expose their secrets, despite the way their secrets impact on me. (housegoeshome.com)