its like a french kiss but down under. boys say this to girls when they think they're getting sex.

Kissing the female vagina

When you and your significant other touch butts together and ram your anuses together repeatedly until the point of concussion

when a guy/women eats out there significant other

like a French kiss but "down under"

The female version of teabagging by squating over someone while they are passed out and kissing them with your lips from down under.

Blowjob because it's a kiss down under.