Wttt Jokes

One cold winter day on lake Erie, two guys were fishing about 20 feet apart through the ice.
One guy wasn't having any luck. The other guy was pulling out fish every time he put his line in the water.
This made the other guy curious. "Hey," he yelled to the other, "what are you using for bait??"
The other guy yelled back, "Mfff Mfff Ogghh Mfft Offt Berr Wttt"
The one guy was very puzzled and said, "WHAT?"
And again the other guy yelled back, "Mfff Mfff Ogghh Mfft Offt Berr Wttt"
Finally the guy had to know what the other guy was saying so he got up and walk over to him and said, "What the hell did you say?"
And then the guy spit something into his hands and said, "You have to keep your bait warm"