Meaning: Oh, de fouf! Je de code blue. Learning by doing (reinforcement learning) and learning by watching (apprenticeship learning) are sometimes not sufficient for language acquisition. Even learning to pronounce individual phonemes with a teacher may not generalize! Also, notice that Joey tries to use supervised reinforcement learning (with a teacher) and unsupervised reinforcement learning (from tape).
This is part of the David E. Kelley School of Advising series.