Annabelle has been saying that phrase often nowadays. She gets bored easily. I think it is more that she wants to play computer games. And since we do not allow her to play computer games everyday, she would use that phrase to "persuade" us indirectly to allow her to use the computer. When she said that phrase, we often suggested to her to do other things like drawing, cycling, reading or even doing her homework. Most of the times, she would do what we suggested but only for a while. Then she would come back to us and complain again about being bored.
This simply shows that when she wants to play her computer games, all other things are boring to do. Even if I give her a gold bullion or a gold earing, she would not be interested as her mind is on her computer games. I bought her 1000 pieces of jigsaw puzzle for her to do but she has yet to start it. It would be no surprise if she says that she is bored with it also.