Female masturbation. The opposite of male masturbation aka "beating meat".
I needed to leave work early to go Beatboxing on my OF.
To smack a kiss from vagina lips onto something, or someone that makes the lips pucker and leave a vagina kiss mark behind. Opposite of teabagging.
For reference, imagine a hairless cat leaving pucker marks from it's rear end every time it sits on a smooth surface.
I ended up lipsmacking the toilet seat when it was down last night.
Chico fell asleep at the party first, so Oli teabagged him, but Lauren fell asleep next, so I lipsmacked her.