Fengorn
Fengorn (fen-gorn): n, A descriptive word describing someone who gets upset an/or angry more than they should over small things that happened and starts being anti-social to those around them.
"Stop being a Fengorn, stay here at the party!"
"Just because you dropped your ice cream doesn't mean you can act like a fengorn"
"Just because you dropped your ice cream doesn't mean you can act like a fengorn"