"I never eat salad. I make sure I don't put a lot of junk into my system, but I hate vegetables!"

Rihanna is expressing her dislike for vegetables, specifically salads. She is highlighting that she does not consume salads which she understands what she takes into her body. She is suggesting that she is health mindful and does not want to put a lot of scrap into her system. This might indicate that she understands her diet and avoids unhealthy foods. It might also mean that she knows the nutritional value of veggies and does not want to consume them. In any case, it is clear that Rihanna does not take pleasure in eating vegetables and chooses to avoid them. This could be due to individual preference or a lack of knowledge about the health advantages of consuming vegetables. Whatever the reason, it is clear that Rihanna does not enjoy consuming salads.