What is the one thing (set of things) that someone has said that’s made you instantly distrust them?

For Me, it’s quite a few:
1. Anyone that has to tell you they are rich/wealthy (having traveled and been fortunate to meet some really well of students while I studied abroad, I’ve learnt that wealth never has to tell you it is or show off so if they do it’s generally not the case🚩)
2. Anyone that has to tell you they are a good person (your demeanor and actions will speak for you).
3. When someone speaks negatively about others or large groups of people (that’s definitely an obvious one as it says a lot about them).
4. The moment someone says “trust me” or “I shouldn’t be be telling you this but”…(no confidentiality exists in that situation lol).

Curious to read yours.
What is the one thing (set of things) that someone has said that’s made you instantly distrust them?
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What is the one thing (set of things) that someone has said that’s made you instantly distrust them?
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