This comment has nothing to do with this episode of Naruto Shippuuden. Instead I would like to bring your attention to Naruto episode 124 "The Sand Shinobi: Allies Of The Leaf" english dub. This happens about 9minutes 52seconds in, after Guy talks to Tsunade, but before the sand ninja show up. Lee runs at Kimmimaru and trips, then he gets back up and attacks Kimmimaru. Kimmimaru attempts to stab Lee and misses, if you pay close attention, you can here Kimmimaru mutter the word "damn" under his breath. That's all I wanted to say.