# Stupid human tricks

**URL:** <https://boards.straightdope.com/t/stupid-human-tricks/570601>\
**Category:** Factual Questions\
**Created:** [February 8, 2011, 1:10am UTC](https://boards.straightdope.com/t/stupid-human-tricks/570601 "2011-02-08T01:10:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![furryman](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/furryman/32/99_2.png) [@furryman](https://boards.straightdope.com/u/furryman)\
**Post date:** [February 8, 2011, 1:10am UTC](https://boards.straightdope.com/t/stupid-human-tricks/570601/1 "2011-02-08T01:10:45Z")

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Does projecting some liquid other than water out the nose or eye ducts cause any physical damage?

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**Author:** ![robert\_columbia](https://avatars.discourse-cdn.com/v4/letter/r/e79b87/32.png) [@robert\_columbia](https://boards.straightdope.com/u/robert_columbia)\
**Post date:** [February 8, 2011, 1:21am UTC](https://boards.straightdope.com/t/stupid-human-tricks/570601/2 "2011-02-08T01:21:15Z")

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Like snot or tears? Probably not.

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [February 8, 2011, 2:25am UTC](https://boards.straightdope.com/t/stupid-human-tricks/570601/3 "2011-02-08T02:25:44Z")

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It depends on the liquid, of course. Blowing nitric acid out the nose would almost certainly cause damage, for instance. But probably, anything that’s OK for the inside of your mouth would also be OK for the inside of your nose.