Does anyone else keep a doc of dumb questions you were too embarrassed to ask in the moment

Not urgent stuff, just small things like why a function is named the way it is or what a config flag actually does that I nod along to instead of asking. I've started writing them down and looking them up later instead of interrupting a meeting. Half the time the answer is trivial and I feel silly for not asking out loud. Wondering if this is just a first-job thing or if senior people still do this.