Quote from Joey in The One with Rachel's Dream
Rachel: Joey, do you have peanut butter on the back of your head? Joey: Oh, man. I thought I got it all. Rachel: How? How? Joey: I was making a peanut butter smoothie, right? And I couldn't find this little plastic thingy that goes in the top of the blender. And I thought, "Well, you know, how important can that be?" Right? Turns out, very.