Howard: You doing okay? Do we need to go?
Sheldon: No, I'm fine. I admit all these people did take me by surprise at first, but I've learned that I can accept change.
Howard: S-Since when?
Sheldon: I managed it when Amy switched her shampoo from Prell to Prell For Oily Hair. Hmm? Although I do miss the way her head used to slide off the pillow.