gittychicken 

Someone who is call a gittychicken is someone who is being very happy while showing signs of nervousness. Being happy while exhibiting behavior associated with not thinking clearly. One who is a gittychicken often excessively smiles and acts silly while also being cowardice as a someone called a "chicken" would be portraying.

"Look at that gittychicken, they're hilarious but they coward away from their own self embarrassment."

gittychicken by Jr Mickle Poe December 21, 2017