Slang term for someone who consistently has very large and smelly boul movements. These people are known for clogging toilets and clearing houses.

Warning: If you get around someone like this and they so much as mention the word restroom, you better run and hope they aren't in your house!
Jan is a Johnny Poo Poo pants because she has broke 3 toilets over the past 6 months and often causes people to vomit if they are within 200 yards of a restroom she has used.
by {Code Monkey} May 22, 2009
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