Write a sentence that humorously turns the following cliché phrase to its opposite: "still waters run deep"
"Raging rapids are only an inch deep, just like my ex's personality."
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Write a sentence that humorously turns the following cliché phrase to its opposite: "still waters run deep"

### Response:
"Raging rapids are only an inch deep, just like my ex's personality."