Jenious with the capital "J" is a dummie.  A Jenious is a retard.  Usually hangs out outside of the school doesn't go to class cause was so stupid that they didn't relize that Jenious is the opposite of genious.
Father- Son you are so fucken smart you must be a Jenious!
Son- Wow you are so cool dad.
Father- With a capital J buddy.
Son- Wow you are so cool dad.
Father- With a capital J buddy.
by Baby Dawn April 17, 2009
Get the Jeniousmug. This word is using to describe any cool idea come up with the person name "Jeremy" or start with "J"
by SharpWest November 5, 2008
Get the Jeniousmug.