In our house, the little boys like to refer to it as a "pretend willy", me being sprung whilst dashing to the clothes dryer....."heeeeey, you have a pretend willy, not a REAL one".
Im happier calling people "cunts" than refering to a vagina that way.
My circle of friends use, twat, fanny, baj, minge and gina (sorry Gina

)