"Have you ever gotten the feeling that you aren't completely embarassed yet, but you glimpse tomorrow's embarrassment?"

In this quote, Tom Cruise is expressing a relatable sensation of anxiety and self-consciousness. He asks if the listener has actually ever experienced the sensation of not being totally humiliated in the present moment, however currently preparing for the shame that may come tomorrow. This could be interpreted as a worry of making mistakes or being judged by others. It also talks to the human tendency to overthink and stress over the future, even when there is no immediate reason to feel embarrassed. In general, Cruise's words catch the vulnerability and insecurity that many individuals experience in their lives.