Flap flicking

The act of flicking external labia during foreplay. When done correctly it will increase blood flow to the labia and clitoris, causing a more intense and pleasurable sensation.

Flap flicking is often requested during oral sex.

Trudi: Had the best sex with Greg last night; I love it when he gets things started with a good flap flicking. When I'm feeling like a naughty girl, I love asking him to flick my flaps.

Glossy style

The act of have sex on a shiny surface such as a well polished car.

Pamela: "should we do it here, on the bonnet of this lamborghini?"
Pat: "maybe Ima slide you up and down, Glossy Style!"