Quote from Chandler in The One After the Superbowl (Part 2)
Chandler: Hey, stick a fork in me I am done. Phoebe: Stick a fork what? Chandler: Like when you're cooking a steak. Phoebe: Oh, okay. I don't eat meat. Chandler: Well then how do you know when vegetables are done? Phoebe: Well, you don't. You eat them and you can tell. Chandler: Okay, then eat me, I'm done.