Winter jokes

[Maggot]

So, Sven and Ole go out ice-fishin one day and Sven is havin a pretty good day, pullin the fish out a da water, one right after another. But Ole's just sitt'n there with his line in the water. And, Sven keeps pullin 'em in and Ole keeps sittin there, fishin out of the same hole, cathin nothing. Until finally, Ole's had enough and says to Sven, "Hey der, ah, what's yer secret der, Sven?" And Sven says, "Ym gm tm fff yrm wm wm." And Ole says, "Sorry?" And, Sven says, "Ym gm tm fff yrm wm wm." And, Ole says, "What's dat der, Sven, I can't quite make out what yer sayin." And, Sven says, "Ptui!", spitting something out, "Ya got ta keep yer worms warm."