who's your daddy?

Something to tell a hooker in the throes of passion while slapping her ass, or your missus which would either result in increasingly intense fornication or your status changing to single.

#The more the daddy issues, the more useful the phrase.

'Who's your daddy?' said Dr. Long as he slapped Nursie on the buttocks.
'You are' says Nursie (being a pornstar with issues and all)

'Who's your daddy?' says Fred.
'He died last month asshole' Sarah says as she slams the door on her way out.