The youngest sister in a family; Baby by name only, usually the brattiest in the line of kin; Daughter with most praise given to her because she is the last girl that will ever pass her mother's birth canal; Known to be Assertive; likes to create her own rules, especially when playing cards or board games; Baby Sister: Nickname given to a younger & dearly loved girl sibling (like: Davina Roxanne) or a brother everyone else in the family thinks is a whiner or a sissy.
by Poof Dog 411 September 8, 2014
Get the baby sistermug. someone in my family that pisses on anything but i still love her
ignore the bottom line
my baby sister
ignore the bottom line
my baby sister
by minecraftgoatttt August 30, 2021
Get the my baby sistermug.