Rex, trying to give a motivational speech but then it evolved into him casualty talking about his really really fucked up cadethood:

“-I mean yeah all the other kids bullied me, hated me even, and no one liked me or even came near me. Come to think of it I did get shuffled around a lot, but that’s just because my entire original batch was decommissioned. And yeah I did have a lot of near death experiences, but I only needed to be resuscitated a handful of times. Ha, there was that one time a trainer threw me off a platform because they were sick of dealing with all my paperwork, but I pulled myself up by my bootstraps and hauled myself out of the ocean. You know what they say; you want something done you gotta do it yourself, because no one else is going to do it for you! I think I came out the other side just fine and I’m stronger because of it! :)”

The entire 501st: “…whAT THE FUUUUUCK!”