Its when a girl is on her knees giving a guy a blowjob while he's standing up. In each hand he holds a bottle of champagne and a bottle of orange juice. He cums in the girls mouth. But before she swallows she opens her mouth to gargle the cum as the guy pours both the bottle of champagne and bottle of orange juice into her mouth.
"She came over after our date and I gave her a generous mimosa."