A man has been out fishing by the lake all day…
… and hasn’t caught anything.
He decides to just give up and call it a day, but on his way he notices a young boy fishing few feet away from him.

The man immediately notices the kid has several buckets full of fish, then witnesses him reeling in yet another one.

“Excuse me”, the man says, “I’ve never been able to catch much of anything around here. I’ve got to ask, what’s your secret?”
The boy pauses for a moment, then mumbles “hmmm mmmph mmm mmph mmm hmm mmmph”.
“I’m sorry, could you say that again?”

The kid repeats, a little louder this time, “hmmm mmmph mmm mmph mmm hmm mmmph!”
“I-I still didn’t quite get that, sorry”
Finally, the kid spits something into his hand, and yells,
“You gotta keep your worms warm!”.