Tag oxymoron ii the rush

Here are some oxymorons related to "the rush":

1. Bittersweet rush: a mix of pleasure and pain
2. Quiet chaos: a sense of calm amidst turmoil
3. Dark light: a contrast between brightness and darkness
4. Fast slow: a sense of slowness in a rapid situation
5. Open secret: a hidden truth that's widely known
6. Serious fun: a playful approach to a serious topic
7. Old news: information that's no longer new
8. Free fall: a sense of weightlessness in a downward motion
9. Soft crash: a gentle impact with a sense of destruction
10. Clear confusion: a sense of uncertainty in a clear situation

Can you think of any other oxymorons related to "the rush"?