Answer: I think after the flood from the dam happened, Boog lost his teddy bear. When he went to retrieve it from Shaw's house, he was soon driven to the cellar by Shaw. Shaw was also singing the lullaby because he had the bear. He must have found it, kept it, and listened to the song enough times that he memorised it.
Open Season (2006)
2 questions
Directed by: Anthony Stacchi, Jill Culton, Roger Allers
Starring: Martin Lawrence, Ashton Kutcher, Gary Sinise, Debra Messing
Continuity mistake: At the amphitheater, just as Boog chases Elliott through the curtain and off the stage, the dark colored paint that was splashed across the back of the curtain only moments before is not visible when Boog and Elliott pull the curtain down upon themselves and neither of them have any trace of paint on them after they roll free of the paint-splattered curtain.
More trivia for Open Season
Chosen answer: Shaw named his shotgun "Lorraine". He refers to the gun by the name throughout the movie. It's not an uncommon practice among hunters.
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