a word used by the incredibly quality faction of The Social Network fandom on tumblr to describe Andrew Garfield and Jesse Eisenberg, as both of them are Jews who were clearly raised by unicorns in a magical forest somewhere
Ah, the sweetsmell of Jewnicorn love in the morning.
A deliciously Jewish Unicorn. Usually wearing a yamacha on it's one horn, and prancing throughout the plains. When threatened, it will defend it's self using a glistening menorah. It's call can be heard everywhere as "Oy!, I am feeling very veklempt!"
Dave Kelly: Dude, did you just hear that? I think it's a Jewnicorn!
Echo: veklempt,klempt, klempt...where are my good socks?
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).