iPhone 7 had developed a weird behaviour where if i’m Listening to
music or podcasts and then lock the screen, any touch of the blank
screen (like putting the phone in a pocket) sends it into a random
cacophony of playing at double speed, playing snippets while scrolling
backwards, going back to the start then relentlessly looping the first
second of the track. Pressing the home button then launches Siri while
the madness continues until the headphones are disconnected.
Reader, it was this bastard thing.