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A person with two anus's. More commonly this is caused by an untreated anal cyst which breaks the skin and creates a second passage. There is another condition called genital duplication which is known to produce a second anus in sufferers.
A friend we once had apparently suffered from an anal cyst many years ago which created him a second anal passage.

Because we had no compassion for this person at all, we decided to call him twopoo - and so it was spoken, that from that day forward that anyone with the misfortune of having two arse holes would be known as a twopoo.

by Space Kat (=^.^=) June 06, 2007
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Jul 26 Word of the Day
Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed
I got a call from X the other night. She had an extra ticket to a concert she bought for a friend, but they couldn’t make it so she called me to ask if I wanted to go because I am her Second String Friend.
by Deus-ex-machina August 26, 2020
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2
A person who has two arseholes; usually caused by an untreated ab cyst of the anus.
Andy was a twopoo and he was able to fart in stereo.
by Jason Small May 23, 2007
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3
A person who, when you tell them you’ve done something, they’ve done the same thing, but better, to feel superior.
I did a poo today!
Really?? I did two poos!!
by MTS Ratcliff October 02, 2020
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