I know

1. I understand that something is the case. A: "Have fun, but remember the rule—" B: "I know, I know, put gas in the car and be back by 10. I will." A: "What you did really hurt the company, Jack." B: "I know, boss. I'm sorry." A: "I know, our time is up." B: "Yes, but I will see you on Friday for our next session."

2. I have the answer or solution. A: "We've got to find some way of increasing sales." B: "I know, let's give out a 10%-off coupon to everyone who spends over $50." A: "Does anyone know the value of X in this equation?" B: "I know! I know! Pick me!" A: "OK, so now that you've heard the whole story, who's the murderer?" B: "I know! I know!"