Turned off by couple of the comments

Regardless of whether it happened, the idea of laughing at someone for such a boring* opinion… one can use their words and tell the person you find it difficult not to perceive their statement as absurd (which is why you probably want to know a bit more and ask about their logic, or you’ve already moved on to a new subject or person).

*Maybe if they talk about, say, lizard people laughing would be expected?