Road to Sakura Naruto Shippuden episode 271:
It's where the alternate Sakura comes to the real Sakura's world and said that to Tsunade because in the Road to Ninja movie 6 she is flat chested that's why Sakura is confused XD
Love it, better than i did the first time i watched/listened to it.
Gets better as it goes on and u can listen closely for better....hearing of the full background music.