Fight! Rock Lee!

is episode 228 of the Naruto: Shippūden anime.

Summary
Lee dreamed fighting Tobi, after awaking, he then thinks about his training to the upcoming war, and saw a boat, while Guy remembers their past "visualisation training" with him using the menu in a restaurant they celebrated when Lee mastered Reverse Lotus (although they left it in ruins when Lee was drunk). Guy wants to have it kept secret, he said it so they can remember what happened there (although he really knows what happened). First is training the White Crane Fist, but the birds beat them. Then the Snake Fist, but the quicksand almost killed them. Next is the Eagle Claw Fist, they had to climb on a seemingly-like cliff, but the eagle caught them. The last is then Lee getting near to know it, but Guy thinks of an alibi, but when they trained in a waterfall he then realises, and learned the Seasick Fist, which he then defeated Guy. Naruto then commented that he can't use said fist unless he didn't overcome his seasickness. Lee is later shown training it while riding in a boat.

Trivia

 * In this episode, Rock Lee was seen dreaming about Tobi, even though he has never actually encountered him before.