all we can do is go “huh, that’s weird”.

There's so much more you can do:

• Deny it ever happened
• Insult the socio-economic status of the witnesses
• Claim there was only one witness even when there were multiple
• Accuse them of taking hallucinogenics, even when they were with their family/at work in the middle of the day
• Confabulate new psychiatric disorders, like "sudden mass hallucination with no prior history"
• etc.