Photo Of President Buhari 'Teasing' A Waitress

what was he telling her that's making her smile so hard.

Could it be this

PMB : zis milk is very sweet.
Waitress : My President, this is not milk
PMB: But you get milk from cows
Waitress : I'm confused sir
PMB: Hahaha! Why? Zis is called Fura d Nunu
Waitress: Pardon ?
PMB: You get it from a pregnant cow
Osibanjo laughing uncontrollably
Waitress: This is champagne Sir
PMB: Take your drink and give me Fura d Nunu