MythBusters · Video summary

Supernatural Showdowns | MythBusters

MythBusters tests myths about body jewelry and lightning, tree cannons, breathalyzers, and zombie survival, revealing surprising truths and busting common misconceptions.

MythBusters · February 7, 2026 · 148-min episode · 7-min read

Key takeaways

🎯Metal body jewelry, like tongue studs, does not significantly increase the likelihood of being struck by lightning; the electricity primarily seeks the shortest path to ground, often through the head, regardless of piercings.16:19
💡Medieval tree cannons, while capable of being constructed from logs, could indeed explode catastrophically due to excessive gunpowder or structural weaknesses, leading to devastating consequences as depicted in historical accounts.37:15
📈There are no reliable methods to 'beat' a breathalyzer test by using common substances like mints, onions, batteries, or mouthwash; these only mask the smell or create false readings, but the alcohol content in the breath remains detectable.48:50
🔍Using a phone during a thunderstorm is dangerous as lightning can travel through electrical wiring and plumbing, creating a path to the user, potentially causing severe injury or death, especially when grounded through water.01:14:53
🚀Avoid using landline phones or taking showers during thunderstorms, as lightning can travel through the connected systems and pose a serious risk.01:15:21
📊Boating with a trailer still attached significantly reduces a boat's speed (by over 80% in tests), making the myth of accidentally driving a boat with a trailer attached entirely plausible and explaining the severe lack of power.01:30:38

Chapters

0:00🎯 Introduction and Lightning Tests
1:24⚡ Lightning Strike on Matt Thompson
2:55🚧 Building a Lightning Attraction Rig
13:59🔍 Lightning Strike Results
14:24🧪 Testing Other Jewelry Effects
17:48🔥 Explosive Cannon and Medieval Techniques
35:38🔫 Testing Gunpowder and Explosive Power
37:15💥 Explosion Tests of Tree Cannon
1:04:42⚡ Electrical House Fire and Lightning Simulation
1:24:40🚗 Attaching Trailer to Watercraft and Amphibious Vehicle Tests
1:28:04🚤 Boat Speed and Performance
1:42:51🧟 Zombie Special: Weapons and Tactics
1:56:11🧟‍♂️ Zombie Horde and Escape Strategies
1:58:36🏃‍♂️ Running from Zombies in Dense Population
2:16:16🧟‍♀️ Zombie Survival and Distraction Techniques
2:17:14🧠 Zombie Weakness and Combat Effectiveness
2:27:28🧛 Concluding Remarks

The digest

High-Level Overview

This comprehensive episode of MythBusters investigates a series of intriguing myths spanning from the risks of wearing body jewelry during a lightning strike, the feasibility and dangers of medieval tree cannons, busting common breathalyzer evasion tactics, a bizarre Civil War pregnancy legend, to practical myths about zombies including weapon choice, escape, and crowd force. Combining historical context, scientific methodology, expert consultation, and hands-on experiments, the team aims to test these myths' validity and offer clear conclusions backed by rigorous testing, offering valuable insights to viewers into the truth behind popular beliefs.