Ice Fishing

Two men are out on a frozen lake ice fishing.  One man had been out on the lake for over two hours, and he hadn't gotten a single bite.  The other man, just about a dozen feet away, had been on the lake for about half an hour, and he already had almost a bucket-full.

This disturbed the other man greatly, so he walked over to him and asked him, "Excuse me, sir, but I'd been out here for a mighty long time and I ain't caught nothing.  How do you catch all them fish?

The other man looked up at him and said, "Mummmummhummmummhummhmummm."

"What did you say?"

"Mummhummmummhummmumnmunhumm," mumbled the busy fisherman.

"Sir, you got a speech impediment?  I can't hear a darn word you are saying!"

The fisherman pointed his finger up, indicating to wait a minute.  He pulled and reeled in his line and another fish.

"OK, darn it.  Either tell me now or else," said the angry amateur fisherman.

As the expert fisherman removed the fish from the hook, he looked at the unfortunate man standing beside him.  He put the fishing pole down and took a large wad of something out of his mouth.

"You have to keep the worms warm," he answered.