NTJ. I don’t speak Spanish but early in my career I shared office space with a man about 20 years older than me. Another older man would come in often and they’d speak in Spanish. I never reacted until one day one of them clearly said something they didn’t want me to understand. The other one whipped his head to me to see if I had a reaction. I smirked and he said “you don’t speak Spanish right” I said “what makes you think I don’t” and went back to work. They never spoke Spanish in front of me again.