Person A: There's a big queue at the club- we'll never get in.
Person B: It's okay- I know the bouncer.
OR
Person A: I knew Caroline before you married her.
Person B: Yes, she told me and I'd rather not discuss it, thanks.
OR
Person A: That bouncer is staring at us- do you know him ?
Person B: Yes, I sodomised him repeatedly last weekend. It was quite pleasant.

I was forced to watch Twilight, not knowing the incredible lack of plot, character development, or anything that would make a good story

"Yo man, I'm bored.. anything going on tonight?"
"Why don't you call James? He's in the know."

"I gotta find someone in the know, so I can pick up some weight and get my business off the ground."

"As we know, there are known knowns.There are things we know we know. We also know there are known unknowns. That is to say,we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know."

John: Hey Bill im tired of breaking my back working at this low paying job.

Bill: Know That

I know your girlfriend.

Billy: "That house needs a lot of repair work". Charlie: "Knowing".