Sometimes, people make lists of things they've never done. Or lists of things they should do before they die.
My world is extremely densely populated with imaginings of all sorts. A suitably hackneyed phrase is "rich fantasy life", but this mischaracterises the case fairly drastically. Sometimes my head hosts narrative-style wish-fulfilment. But mostly it just paints pictures. Or scrolls through photo-real sandwiches to find out what I want for lunch.
Some things make such systematic and long-standing appearances in my mind that it represents an effort of will -- a tiny, nano-erg fly wing-flap of an effort, but an effort nonetheless -- to recall that I have never done them. I would not write them on a list of things I need to do before I die.
One of these things is discharged a firearm.
How interesting. Particularly since I am perfectly certain I have not the slightest idea what that would really be like.