What's your secret? What?

It's a cold winter day, and an old man walks out onto the frozen lake,cuts a hole in the ice, drop in his fishing line and waits patientlyfor a bite. He's there for almost an hour, without even a nibble,when a young boy walks out onto the ice and cuts a hole next to him.The boy drops in his line and minutes later hooks a largepickerel. Very quickly, he pulls in another large catch. Afterwatching the process repeat itself a few more times, the old man can'ttake it any longer.
"Son, you've been here only a few minutes and have caught a half-dozen fish! How do you do it?"

The boy responds , "Roo raf roo reep ra rums rrarm."

"What was that?" the old man asks.

"Roo raf roo reep ra rums rrarm," says the boy.

"Look," says the old man, I can't understand a word you're saying."

Annoyed, the boy spits a pile of squirming worms into his hand and says, "You have to keep the worms warm!"