A 'slippery slope' is an action or decision that will probably make things worse or which is likely to lead to something dangerous or unwanted. A slope moves downhill, so the implication here is that the decision or action will lead to someone's downfall. This is an informal idiomatic expression.

1. Many people in the country are worried that if their government's new reforms are all passed, their country will be on a slippery slope to ruin.
2. I'm worried about Peter. If he doesn't change his ways, he will be on a slippery slope to a life of crime.
3. Borrowing money when you are young can set you on a slippery slope to debt when you are older.

1. In my performance review, my manager said that I was on a slippery slope and needed to turn things around quickly if I wanted to keep my job.
2. By providing free snacks and sedentary jobs, some companies set their employees up on a slippery slope to obesity.
3. I think giving in to their request will be a slippery slope. They will expect us to give them everything they ask for.