Come on in, the water's fine! phrase
Used to encourage someone to jump into a swimming pool or the ocean because the water temperature is agreeable
A: Come on in, the water's fine! B: You must be kidding. You are shivering with cold
Used to encourage someone to start to do something
We will play bungee jumping. Come on in, the water's fine!
1. Used to say that someone is in the water with sharks.
2. To be involved with devious or hazardous people.
The origin of this phrase is not clear.