I was text-chatting to a Spanish-speaking colleague on MS Teams and we both said almost the same thing at the same time - as a British person, my reaction was to say "Snap!" - it's a tradition to say it when you both say the same thing at the same time. I think it's popular in the UK and Australia and New Zealand, and in the US people say "Jinx!" when this happens. I wondered if there is an equivalent in Spanish?
This page explains the English usage of "Snap" and "Jinx": https://separatedbyacommonlanguage.blogspot.com/2006/10/jinx-and-snap.html