Baker's Daughter 

Offspring of a dozen and a baker's dozen. In formulaic terms, it is 12 (a dozen) times 13 (a baker's dozen) which equals 156.

Salesman: "How many bagels do you?"
Customer: "Well, there's a lot of people, I better buy a baker's daughter"
Salesman: "We don't have that many bagels, sir"
Customer: "Well, shit."

Baker's Daughter by Baker's daughter's daddy January 1, 2012

Baker's Daughter's Dozen

Thirteen of something plus a sexual favor

I picked up those cookies from my coworker last night and got a baker's daughter's dozen.

Baker's Daughter's Dozen by Brophytastic November 22, 2016

Baker's Gross Daughter 

A baker's daughter, minus a gross. ie: a regular dozen. Formulaically: 12 (a dozen) times 13 (a baker's dozen) minus a gross (144) = 12 (a baker's gross daughter).

Salesman: "How many bagels do you want?"
Customer: "A baker's daughter"
Salesman: "We don't have that many sir"
Customer: "Oh, ok, make it a baker's gross daughter"
Salesman: "Coming right up!"

Baker's Gross Daughter by Baker's daughter's daddy January 1, 2012