Ok, all you ndn experts I was looking in english-dakota dictionary, which was written in the 1800's and found this word:
Witkowintipi which means Brothel.
Did the ndns have whorehouses back in those days?
Obviously they had to if the word existed.

Jay Grant, Loretta Renville Lineback and Jason Don like this..
Barbara Goen Tipis not houses..
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Shobe Renville Not necesarily, they were probably decribing the wasicu brothels...
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V Keith Tracy They were those multi-level tipis on the rich side of Camp....usually a Tipi Saloon on bottom floor! LmBrothelO
Barbara Goen Bet that's where tipi creepin came from...how did we get the name "tipi" anyways..
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Grady Renville They were in their tents and drinking ndn tea and they had to go pee, tipi.
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Barbara Goen HAHAHAHAHHAHAHALOLHAHAHAHA​HHAHLOLHAHAHAHAHALOL!!
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Maury Franco LOL
Grady Renville Breaking the word down. Witko means crazy. Win means girl/women. And tipi means house/lodge - crazy women house.