James O'Brien's Mystery Hour James O'Brien's Mystery Hour

Who's filtering these callers?

Sep 24, 2026 · 49m

Summary

James O'Brien hosts Mystery Hour, where listeners submit questions and answers on diverse topics. The episode covers inquiries about the purpose of the small pocket on jeans, why humans say "ow" when hurt, and the biological reasons behind tongue movement during chewing. Other questions include why dead flies are found in bathrooms, why humans don't have pouches like marsupials, and why the UK uses 240-volt electricity compared to the US's 110 volts. Listeners provide answers ranging from denim history to electrical engineering principles.

Topics discussed

Introduction to Mystery Hour and show rules Rules for callers and banter about motoring James O'Brien's story about a stolen Vauxhall Zafira Question: What is the small pocket on jeans for? Question: Why do we say 'ow' when hurt? Sponsorship and transition to next caller Question: How does the tongue know what to do while eating? Question: What is the most common cause of death for flies? Question: Why haven't humans evolved better teeth? Question: Why is the 'bass face' similar to a disgusted face? Question: Does British Sign Language have regional dialects? Recap of questions and discussion on rave culture Question: How does your bladder wake you up at night? Answer: Regional variations in British Sign Language Question: Why is UK voltage 240V vs 110V in the US? Answer: History of the small pocket on jeans Recap of unanswered questions Answer: Explanation of voltage and current safety Answer: Biological explanation for tongue movement Answer: Scientific explanation for waking up to urinate Conclusion and final thoughts on involuntary reactions
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