1. A diminutive form of "big sister". "Big sissy" was originally an affectionate title given to a girl by her parents, as a way of fostering a bond between an older sister and a younger sister or baby brother. Such a title would rarely last beyond the younger child gaining the ability to form complete sentences.
2. A defenseless coward. Bullies, and other sorts of troublemakers, used it as a taunt. If a child threatened to tell on them, the older boys teased the child, asking "You gonna go get your daddy? You gonna go get your mommy?" This line of questioning inevitably would end with "You gonna go get ... BIG SISSY?" This would elicit roars of laughter. Referencing "big sissy" not only named the least formidable ally that a child might call to aid them, it also implied that the child was either a small girl, or an even smaller boy, with a sister that was only slightly older. Younger boys, especially those without sisters, would be confused as to what a "big sissy" was, although given the context, it was clear that bravery and fighting prowess were not traits that "big sissies" possessed. Thus, it became a general insult to a colleague's fighting ability and bravery.
3. (Often just "sissy" or "sissy girl") An adult crossdresser who prefers wearing oversized versions of clothing worn by prepubescent girls, with a preference for what a girl might be forced by her mother to wear to Easter services, or have been worn by the more wealthy American Girls dolls.
2. A defenseless coward. Bullies, and other sorts of troublemakers, used it as a taunt. If a child threatened to tell on them, the older boys teased the child, asking "You gonna go get your daddy? You gonna go get your mommy?" This line of questioning inevitably would end with "You gonna go get ... BIG SISSY?" This would elicit roars of laughter. Referencing "big sissy" not only named the least formidable ally that a child might call to aid them, it also implied that the child was either a small girl, or an even smaller boy, with a sister that was only slightly older. Younger boys, especially those without sisters, would be confused as to what a "big sissy" was, although given the context, it was clear that bravery and fighting prowess were not traits that "big sissies" possessed. Thus, it became a general insult to a colleague's fighting ability and bravery.
3. (Often just "sissy" or "sissy girl") An adult crossdresser who prefers wearing oversized versions of clothing worn by prepubescent girls, with a preference for what a girl might be forced by her mother to wear to Easter services, or have been worn by the more wealthy American Girls dolls.
The boys teased the young child when he threatened to get his "big sissy". However, his older sister was hardly what one might call a "sissy", as she was a college junior with a black belt in Judo. After going to perhaps excessive lengths to humiliate them for teasing her brother, the boys were too embarrassed to ever tease another child. One apparently never got over the incident, and to this date, his Craigslist Casual Encounters profile name is "SissySlut69".
by Melgar II July 11, 2017
Get the big sissymug. by bo April 19, 2003
Get the sidewalk sissymug. a toilet of normal dimentions that has a reduced water flow,thereby making all but the smallest bowel movements become stuck or lodged.
by Skydash May 23, 2009
Get the sissy bowlmug. scar produced by laying a lit cigarette across the forearm and allowing it to burn along the skin - the longer the scar, the longer the person stood the pain, the less of a sissy they are.
A sissy scar is 1/2 to 1-1/2 inches long narrow scar along the lower arm and caused by a cigarette burning across the skin.
by Mashugana March 18, 2007
Get the sissy scarmug. by JerchJapa September 6, 2019
Get the sissy pissymug. A figure of speech that describes how a person or an object is moving, typically in a digging or burrowing motion against something. An example can be a buoy dropping into water and shaking as it starts to float, or when a wood beam holding a roof shakes in mud as it becomes loose and lets the roof collapse. The action of doing something as a "sissy pig" is as if someone shook and rubbed their face back and forth in something, just like a pig that digs its nose into its food.
The man was waxing the floor really fast like a sissy pig, because he was scraping and scratching the floor too hard!
by Lueriva Fetheroviu February 22, 2023
Get the sissy pigmug. 
Get the Sissy Stickermug.