First, he's distracted by the stretch, his gaze involuntary travelling from top to toe to take in the view. Then, he's distracted by the words that prompt the memory of freeing wookies from the Imperial factory on Kashyyyk, the rather terrifying hug he got from one of them. Those wookies smelled bad, but it was obviously not their fault. And he's not about to make a joke about that, so he doesn't say anything.

Instead, he kisses Luke's cheek, and finally gets out of bed.