So this guy decides he wants to fish. Buys a new fishing rod. Those automatic electric thingy. Goes to a river and starts to fish, but his bucket is empty.
100 meters away, there is this bum. Out of a shoelace and a branch, made a rod, and his bucket is full. shoelace goes into the water, and the fish bites immediately.
The other guy is perplexed, then asks what his secret is... and only hears some muffled words. So he stands up, and walks up to the bum and asks again:
Say, what is your secret?
And the bum puts his hand up to his mouth, makes a barfing gesture, and says: keep your worms warm...