A meeting, non-technical PM to me:
"Could you borrow me your laptop? I haven't taken mine and want to make some notes."
"Yeah sure" I said, launched some text editor and turned the laptop to her side. During this motion other colleague had chance to glance at the screen. His eyes opened wide with mix of horror and WTF look:
"What the... That's really not good idea."

Turned out I was in complete autopilot mode and pressed Win key, entered "gvim", accepted by enter.

I've launched Vim.
To a non-technical person.