Two men have been ice fishing all day. One has had no luck while the other has pulled out a ton of fish.

-“What’s your secret?” asks the 
unlucky fisherman.

-“Mmmmm mmm mm mmm mmmm mmm mmm,” is the reply.

-“I’m sorry; what did you say?”

-“Mmmmm mmm mm mmm.”

-“I still didn’t understand you.”

The lucky fisherman spits something into his hand and says slowly and clearly,

-“You’ve got to keep your worms warm.”