During sex you milk the cow when shes on bottom in the middle of a threesome. You have the asshole and the other has the vagina when hes suckin the tits. When you slap the ass and the milk comes out
Jack: Yoooo I had a threesome last night
Will: Damn you lucky bitch Jack: Yea we tried milking the cow
Will: WTF?
Jack: Here me out it felt good
Will: Shut the fuck up
A male is on all fours while a women is pulling his erect panic like milking a cow all the while a cup is under the mans dick some when he nuts in to the cup the women then proceeds to drink it