Mark: We're going to have to do a lumbar puncture. You ever done one?
Carter: Uh no, but I've seen it done.
Mark: See One, Do One, Teach One.
Carter: Uh no, but I've seen it done.
Mark: See One, Do One, Teach One.
Mark : We're going to have to do a lumbar puncture. You ever done one?
Carter : Uh no, but I've seen it done.
Mark : See One, Do One, Teach One.
http://www.tv-quotes.com/shows/er/quote_26420.html
