An individual conceived during the North American blizzard of 2011 and born approximately November, 2011. variations will include blizzybabe and blizzyboy.
Jason: So how old is your daughter?
EZ: Lemme see, eleven subtracted from...yeah, that's right, she was a blizzybaby.
or later usage:
Vero: Whats the 411 on the blizzybabe?
Anton: Dude, its 1111, not 41.
Vero: LOL, but that is so lame.