For me, it’s “Clear Storage”. Sometimes I try to clear the cache of some mobile game I’m playing and end up deleting all my progress instead.
F1 (in Windows)
The home button is on the touchscreen of my smartphone. When I try to type in a hurry, I often miss the spacebar and tap the home button at some point in a paragraph. Then suddenly I’m looking at the apps I have open, feeling old, wishing for a physical keyboard.
Not specifically a button but I swear if I’m not looking at my phone playing something for audio on YouTube, the lightest touch anywhere on the screen just so happens to be where the ad is.
Discord voice call just tap the name and tap the call button once in a blue moon.
A refresh button when I’m moving around on a map with right mouse button (don’t ask me why it’s made this way, idk) and it resets all my work done on the map.