look up any word, like dirty sanchez:
 
1.
When a person of the female gender, behaves in a silly manner.
*School Girl drops her school pencils everywhere*
Classmate: NO YOU SILLY GIRL!
by TabbPunk May 21, 2011
 
2.
A simple description of the famous writer Angela J.C.!
That Angela, what a silly girl!
by jaime December 26, 2004