Dialog 1 rock the boat [ 波風を立てる ]

Angela:Why isn't Willy wearing a tie?
Yukio:He's trying to persuade our company to go Cool Biz.
Angela:But he isn't wearing any shoes either. He's just wearing slippers!
Yukio:If he keeps rocking the boat he's not going to need to get dressed at all.
Angela:Yeah, he'll need to get a new job.

Dialog 2 bite off more than one can chew [ 無理をする ]

Angela:I can't wait to get my pilot's license.
Yukio:Wait. I thought you were getting a medical license?
Angela:I am. I'm getting both!
Yukio:How are you going to pay for both flight and medical school?
Angela:I just picked up a third job.
Yukio:Wait a minute. I think you're biting off more than you can chew, Angela.