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Oral Hygiene Bro 

A user of 4chan's /a/ board, who, starting October 2010, started writing a story where he was inspired to brush his little sister's teeth after watching Nisemonogatari's infamous toothbrush scene. Eventually, it got to the point that they married and had a child together. He kept posting for about 3 years, until August 2013, when he was never heard from again. Nobody knows if the story is real, but nobody can prove that it's false either.
Aidan: "yo have you heard of that one Oral Hygiene Bro who fucked his sister"
Bob: "Yeah that's some messed up shit"
Related Words
hyogi hoogie hygiene Hyori hogie hyomin Hogi hogina hoogity boogity hygienate

Dental Hygienist

The Hot Girls at the Dentist Office who clean your teeth and tell you to brush more often. They accidentally brush their breasts against you and use the suction too.
A dental hygienist is the cute blonde who cleans your teeth every 6 mos. that you secretely have a crush on.
Dental Hygienist by Casey X. March 17, 2009
A self sufficient person who is somewhat a masochist. Likes to stay up to study but complains about not getting enough sleep the next day. Has 2000+ photos of the sky because she would rather do that than actually study before midnight. Loves cats and everyone seems to depend on her for help on anything related to school. This is the one person in the class that actually listens to instructions. She will constantly tell you not to do things even though she sometimes does those things she told you not to do. Waking up early then just sleeping again is a daily occurrence for her. Still, very supportive and is liked by everyone.
Man, I wish there was Hyorim in my class.
Hyorim by pixelvince April 27, 2021
When you "hogit" you take it all.
Don't hogit put some my way you greedy pig.
Hogit by ITman May 7, 2008

Hygimoron 

Two coinciding terms that mean the same thing in the same sentence. (Antonym: Oxymoron)
"Not using my potential to its full potential." This is an example of a sentence that is a Hygimoron.
Hygimoron by Lewer427 June 5, 2010

Hygiene Conscience 

The little voice in the back of your head all non-goddamned-disgusting-dirty-pigs have telling them not to be a goddamned-disgusting-dirty-pig.
Holy fuck Janice, I've cleaned the kitchen four times today already; don't you have a hygiene conscience!?
Hygiene Conscience by Ramfar June 1, 2011