Ophiuchean 

Physically impossible/undoable in nature, but done through sheer force of power.

That homework was ophiuchean! I'm glad I got it done.

Ophiuchean by Glowy Euthidae July 10, 2024

Ophiuchuian

People born under the new thirteenth astrological sign. Dates range from November 30th to December 17th.

Joe: Hey, I'm born under that new astrological sign Ophiuchus, which makes me an Ophiuchuian instead of a Sagittarian.
Moe: Dude, it makes no difference for you. You're still a stupid puddle of a homeless man's urine.

Ophiuchuian by Jayophonic January 16, 2011