If there are signs just outside of our solar system which have messages for any extraterrestrial passers-by, what might one of those messages be?

I think one message would be: "Caution humans ahead."

Something simple and clear like that. What would your message be?

I hope so. Don't wanna get pulled over for going down a one way the wrong way.

"Never click a UAPtictac thread."

Okay! That made me laugh. And, a useful message, too!