rock (one's) world

slang

1. To cause a profound or irrevocable change in one's life. The news of his daughter's death rocked his entire world. It rocked my world to see first-hand the devastation of such extreme poverty. It was then that I decided I would dedicate my life to helping others.

2. To have a very strong and positive impact on one. My five-year-old loves superhero movies, so this new one is going to rock his little world. The graphics in this new video game are going to rock your world!

3. To give one an intensely pleasurable and satisfying sexual experience. I know he's not much to look at but, wow, did he rock my world in the bedroom!