# Knock knock

**URL:** <https://boards.straightdope.com/t/knock-knock/559545>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [November 5, 2010, 3:21am UTC](https://boards.straightdope.com/t/knock-knock/559545 "2010-11-05T03:21:11Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![InterestedObserver](https://avatars.discourse-cdn.com/v4/letter/i/838e76/32.png) [@InterestedObserver](https://boards.straightdope.com/u/InterestedObserver)\
**Post date:** [November 6, 2010, 1:06am UTC](https://boards.straightdope.com/t/knock-knock/559545/21 "2010-11-06T01:06:07Z")

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Interrupting cow.

MOOOO! 😉

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**Author:** ![Colibri](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/colibri/32/1841_2.png) [@Colibri](https://boards.straightdope.com/u/Colibri)\
**Post date:** [November 6, 2010, 4:39am UTC](https://boards.straightdope.com/t/knock-knock/559545/22 "2010-11-06T04:39:12Z")

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Sam and Janet.

Amos.

Andy.

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**Author:** ![Count\_Blucher](https://avatars.discourse-cdn.com/v4/letter/c/c5a1d2/32.png) [@Count\_Blucher](https://boards.straightdope.com/u/Count_Blucher)\
**Post date:** [November 6, 2010, 3:30pm UTC](https://boards.straightdope.com/t/knock-knock/559545/23 "2010-11-06T15:30:39Z")

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“Danger! The Emergency Destruct System has now been activated…”

ht tp://www.wavsource.com/snds\_2010-10-31\_9145647707462164/movies/misc/alien\_danger.wav

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