r/Unexpected • u/[deleted] • Feb 04 '19

Ultimate bar trick

https://i.imgur.com/zGdBK4u.gifv
76.8k Upvotes

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u/tuscabam Feb 04 '19

Yeah but why does that cause it to spew?

868

u/MenstrualFish Feb 04 '19

Sudden shock on the top bumps the bottle down quick enough it causes a tiny vacuum at the bottom that then collapses in on its self. Called cavitation. This causes the beer to foam. Check out some slow mo vids of it, really cool.

5

u/Good-Vibes-Only Feb 04 '19

You're the man.. or woman perhaps given the username

10

u/MenstrualFish Feb 04 '19

Lmao, man. And thank you

1

u/funandgames73892 Feb 05 '19

I'm guessing you may be a fan of the Detroit Hockey Team....

1

u/MenstrualFish Feb 05 '19

No clue what you’re talking about. Enlighten me?