Nursing things you should know by now

Does anyone else have a nursing skill or question they feel like they should know by now? Like, you've been a nurse for a few years and somehow some very simple nursing skill has slipped by you? And now it's been so long and you can't ask because it's just embarrassing.

I'll go first. I've literally never hung anything IVPB. I'm in the ED and we run everything concurrently on the pump. If you asked me to run something IVPB right now I would have to google it. Whoops.