informal to do something before someone else does it.
I was just about to open some wine but I see you've beaten me to it.
beat (one) to it
To do or obtain something before one. I was going to suggest that idea to the boss today, but unfortunately one of my co-workers beat me to it.Tim wanted the last turkey leg, but his brother beat him to it.
beat someone to it
succeed in doing something or getting somewhere before someone else, to their annoyance.