I once sat through a two-stage interview for fairly niche job that I was exceptionally skilled at and had 8 years experience in. Then they mentioned the $21.00 an hour while rattling off the rest of the job conditions and I stopped the guy and made him repeat it. We both sat in silence for like 20 seconds and then I was like "Alright, should I go? I'm gonna go." And just sort of awkwardly left.

A couple months later I got a salaried full-time position starting at more than twice that rate for the same sort of work.

I accidentally laughed and then apologized to one poor recruiter when she told me it was $15/hr.

Do it on purpose and don't apologize next time.

One company i worked at lost their contract and I got laid off. A week later the same company called me and offered a position under a different contract at a different site for a 20% pay cut. I laughed at them and said nah, i can't go backwards. Collected unemployment and found a different job at my previous rate a few weeks later.