God: "Abe, you knew your maidwoman as well as Sarah? And she gave birth to that bastard of yours, Ishmael?"

Abraham (boasting his double scoring): "Yep, God. My sons are Isaac and Ishmael."

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.

"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."

I know your girlfriend.

1) I know what you're talking about.
2) Right know im a little confused.
3) i haev know idea wut ur talking about lol

Can she go? I, er, know.
P.S. Don’t accept know for an answer.