["Boolean Joke"]; 0 == false, 1 == true; What's this (boy == ??, girl == ??) in your favourite programming language

Question

0 == false, 1 == true;
what's the boolean value for:

boy == ??, girl == ?? in your favourite programming language?

Answer 1

In Javascript:
boy == true || false, girl == true && false

Answer 2

boy=NULL, girl=true