I have seen some interesting captchas over the years, and some of them intrigue me enough to find out why they are what they are - the history - the mythical meanings - all very interesting to me.

If you want to see all my other captcha research check out my master index http://bitbin.it/fbhOXm1W/

Here is another captcha word combo: rum do

Cooking, Food and Restaurants:
https://www.facebook.com/RumDoEspressoBar

Definition and Pedia sites:
http://idioms.thefreedictionary.com/a+rum+do
http://www.phrases.org.uk/meanings/307350.html
http://www.worldwidewords.org/qa/qa-rum1.htm

Economy, Markets, Trading:
http://www.economist.com/news/americas/21567090-new-president-faces-tax-revolt-rum-do
http://www.bbcamerica.com/anglophenia/2011/12/frasers-phrases-its-a-rum-do/

Entertainment and Music:

Misc:

Shopping and Stores:

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http://bitbin.it/fbhOXm1W/ Interesting Captchas master index - links to all my captcha pastes
http://bitbin.it/S4WFaJLS/ BitBin Throwback Index - interesting pastes I found here