If you get 'some of the face' it means that you have kissed someone. Or if you want some of the face then it means you would like to kiss someone. It is usually accompanied witha a swirling, sweeping, open-handed gesture circling your own face.
Dude #1 - Yo, how did you get on with that chick last night?
Dude #2 - Well, I got some of the face.
Dude #1 - Nice.
Its a euphemism for a Vagina. It can come in two varities. A good Sitch or a bad sitch. Sitch is short for situation. ie; She has a good situation to be in or a bad one. Get it?
Dude #1 - So how was that chick last night?
Dude #2 - She had a tasty little sitch.
- OR -
Dude # 1 - So, how was that chick last night?
Dude #2 - Man she had a nasty sitch! All hairy like a briar patch!