Being unnecessarily angry and overly loud about it.
I thought she was a chill chick, but when i asked to PIITB she got all yelly.
by Oben Hart March 31, 2006
A loud and obnoxious drunk girl at a party.
That drunk girl is acting like a real yelly.
by OdinPM September 02, 2010
A term referring the the volume of somebody's voice.
"My math teacher is quite yell-y."
by Ethan G---- August 29, 2006