1. you said it - Adverb
2. you said it - Phrase
an expression of emphatic agreement
Source: WordNetCount de Monet: It is said that the people are revolting King Louis XVI : You said it. They stink on ice. Mel Brooks
Remember this? You gave it to me for ensuring your trigger finger got reattached to your hand. You said it would remind me of that spark of decency inside me. I'm trying to do something decent now, Captain. Eoin Colfer
Like an ape? A primate?...You said it, you said it. Jean-Michel Basquiat
you'll see, jane,' he promised her. 'you'll forget me, and it won't hurt tomorrow. besides, you said it yourself: love means you cαn never be apart. so we'll never be apart, jane, becαuse i love you so much. i'll always, always love you. James Patterson
I don't know, we played a show for like, ten kids, but those ten kids were just insane. It's really quantity, not quality, and that's what I really -- (Pete cuts him off) Pete: It's quality, not quantity. You said it backwards. I don't want you to look like a dumbass... on film. Patrick Stump
I will use anybody I must. You said it yourself; I am who I am. And I'm using myself up, Perrin, because I have to. Just like I'll use anybody I have to. We don't have a choice anymore. Not me, not you, not anybody! Robert Jordan