I do. My parents (americans) lived between HK and Taiwan for a decade before I was born, and growing up, I was fortunate enough to have my folks teach me a bit of chinese. We'd regularly go to a local Chinese restaurant where the staff would speak to me in Chinese so I could practice speaking. Seeing as some of the staff were significantly older, my dad taught me to be hyper aware of customs surrounding dining norms and etiquette. One day I accidentally left my chopsticks in the rice bowl while there was still rice in it, and the waitress (an older Chinese lady) saw it - poor lady nearly fainted.

I did not make that mistake ever again.

For context - it's a way of saying "death to your family" or something akin to that.