# Sticking your finger in soda

**URL:** https://boards.straightdope.com/t/sticking-your-finger-in-soda/161022
**Category:** Factual Questions
**Created:** [March 13, 2003, 3:25am UTC](https://boards.straightdope.com/t/sticking-your-finger-in-soda/161022 "2003-03-13T03:25:49Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![mipiace](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@mipiace](https://boards.straightdope.com/u/mipiace)
#### Post date: [March 13, 2003, 3:25am UTC](https://boards.straightdope.com/t/sticking-your-finger-in-soda/161022/1 "2003-03-13T03:25:49Z")

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When you pour soda and it gets all fizzy why do the bubbles pop quicker if you stick your finger in?

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### Author: ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)
#### Post date: [March 13, 2003, 3:27am UTC](https://boards.straightdope.com/t/sticking-your-finger-in-soda/161022/2 "2003-03-13T03:27:41Z")

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Oils and other contaminants on your finger weaken the surface tension of the fluid composing the bubble walls, causing them to burst quicker.

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### Author: ![Stan\_Doubt](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@Stan\_Doubt](https://boards.straightdope.com/u/Stan_Doubt)
#### Post date: [March 13, 2003, 3:27am UTC](https://boards.straightdope.com/t/sticking-your-finger-in-soda/161022/3 "2003-03-13T03:27:53Z")

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oils from your finger are the cause.