What is Ymd?
1) Your Mother's Dick2) The penis of your mother 3) The sausage hanging from the crotch of your mammy 4) The organ from which, as an infant, you sucked out what you thought to be milk
"Hey, you know what I saw yesterday?"
"YMD. I know. Shut up about it already."
See cock, schlong, transvestite, tranny, mommy