Shitty-Girl Badge Share definition Flag A Girlscout merit badge earned when one exhibits proficiency in being shitty towards another Girlscout. Often used as an insult. "Thanks for hooking up with my ex-boyfriend! You've definitely earned your Shitty-Girl Badge" Shitty-Girl Badge by Chissmoose December 6, 2006 Get the Shitty-Girl Badge mug.