【内容简介】

　  17岁的迈克（扎克·埃夫隆 Zac Efron 饰）是校园风云人物，在一次关键性的篮球冠军赛上，他决定放弃前途，向怀有身孕的女友斯佳丽求婚。20年后，人到中年的迈克（马修·佩里Matthew Perry 饰）生活事业两失意，妻子斯佳丽（莱斯利·曼恩 Leslie Mann 饰）决定与迈克分居，一双儿女也对他形同路人，迈克只好搬入科技新贵的朋友奈德（托马斯·列侬 Thomas Lennon 饰）家暂住。迈克追忆自己本来可有的锦绣前程，却在重返高中校园过程中遇到一位神秘的清洁工，让他突然重返17岁。迈克决定与奈德假扮父子，重入高中……　

【选段台词】

Ned：I hate you. Hello, I'm here to enroll my son...in school. Mark.

Mike: What's up?

Ned：So？

（The teacher is on the phone.）

Ned：So we'll just have a seat till you're ready for us. We'll be right, uh...Okay. What's this you're wearing?

Mike: This is cool. This is hip. I have a picture of Kevin Federline wearing the same thing.

Ned：I don't know who that is.

Mike: What are you wearing? I told you, like a dad.

Ned：I am.

Mike: You look like Clay Aiken.

Ned：Leave him out of this.

Mike: Are you sure these look legit?

Ned：Oh, yeah. Look who you're talking to. I'm the guy who invented the software that prevents people from stealing music. I also invented the software that helps people steal music...but that's a happy coincidence.

Mike: What is that?

Ned：Oh, my G... Wrong. These are for me.

Mike: Are You kidding?

Ned：What's-her-name and Chewie's for me.

Teacher: Miss Masterson will see you now.

Ned：Let's go.

Mike: Just don't try to be funny,  all right? Say as little as possible.

Stan: Hey, watch where you're going, toolbag.

Mike: So sorry, sir. Our fault.

Teacher: Stan.

Principal: Hello. I'm Jane Masterson, principal here at Hayden High.

Mike: Hi.

Principal: Hello.

Ned：Hello.

Principal: Hi.

Ned：Hi.

Principal: Uh, okay. Yeah, I think we're good here.

Ned：Sorry. I think our hands just made a baby.

Mike: Excuse my dad. He's not used to talking to attractive women.  

Principal: Oh, thank you.

Mike: Mark.

Principal: Mark...for that flattering yet totally inappropriate comment. Please sit.

Ned：Before we get started, I think you should know that, uh, Mark's a bastard.

Principal: Excuse me?

Ned：I had him out of wedlock, so...I'm single. And I'm very rich.

Principal: Okay. Did you bring your transcripts?

Ned：Oh, yeah.

Mike: Transcripts.

Principal: Last school you went to was Cutler High in Connecticut. Straight-A student. Very inpressive. Math club...National Merit finalist...Coney Island Hot Dog Eating Champion. Well, I think Hayden would be lucky to have you. Welcome.

Mike: Thank you.

Principal: Uh, yes, Mr. Gold. Do you have a question?

Ned：Your hair is pretty.

Principal: Ah. Not a question, but thank you.

Ned：Would the lady mind if I smelled it?

Principal: I think now is probably a good time to tell you that I don't date my students' parents.

Ned：OK, well, maybe I should tell you that I never don't not date the principal of my child.

Mike: Okay, come on, dad. Come on, dad.

Ned：Let's go. I was about to close!