Patches of missing hair in one's head; temporary bald spots. Similar to ringworm with the words origin in Detroit.
Lil Pookie came to school with tetus and all his classmates roasted him.

Kevin Durant tilted his head forward during an interview and exposed his tetus to the world.
by MidNight706 April 28, 2018
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Species of Dashers that are on “Geometry Dash Level Requests” that sends hentai or +18 levels and want to be funny pissing off the streamer.
Look! A Tetus Obsinetus, are they good?
by NotWacho June 15, 2021
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