I have no idea how to speak to other people's dcs. My ds is 5 months so obviously he doesn't understand anything I say, but we are often around toddlers who can be a bit naughty/ a bit rough with ds. I don't want to shout 'Stop that!' or overreact to small things but it would be good to gently (but firmly) stop them doing certain things.
What's the best way to get the message across without offending/upsetting anyone? Has anyone got some handy child-friendly phrases for such occasions?