儿歌

宝宝在学校学了些乱七八糟的儿歌，今天唱的是：
（to the tune of Barney ‘I love you’ song）
I hate you
you hate me
let's tie Barney to a tree
Shoot him with a Forty-four
No more stupid dinosaur

(to the tune of ABC song)
ABCDEFG
Barney is my enemy
Stick a cannon to his nose
Pull the trigger where he goes
ABCDEFG
Barney is my enemy

不明白Barney跟他有什么仇。