sissy mary 

Someone why chickens out of doing something after promising to do it.

Rachel recieved the nickname sissy mary after dropping outof the class election race.

sissy mary by Angelika March 30, 2005

sissy mary 

A person who afraid or scared to do something. Also called a baby back bitch.

Adam was a sissy mary because he refused to fix his snow blower on his own.

sissy mary by sexystephy January 26, 2016