... good one: how many times over the years have we had to "bite our tongue" (ie. not say what is going through our mind/s).... but sometimes it's hard not to: sometimes deciding when to speak up and when to shut up is hard and a decision has to be made quickly 🙂

That would work well for us older folks. By the time we finish doing that, we’ll probably forget what we were going to say.

The way I know this is: "Turn your tongue seven times before you speak".