DS is only 2.6 but was bought a box set of Horrid Henry books by a well-meaning Aunt. He opened the gift and we said "they'll be put away for later" but he wanted to look and have one read to him. So we did. Mistake! Now he is obsessed with them and has already started saying "hate you" etc that HH says.
Anyway, it's easily fixed at this age as we've just hidden them all and he's forgotten about them. But the point was - they are bloody horrible books! I must be at my pearl-clutching best but Henry behaves in an awful way, with no consequences to his actions and always gets what he wants. Speaks to his parents/brother awfully.
I can't envisage a time that I want those books out of hiding!