((Horrid Henry is a biggest baby but He clings on Baby Lukas very tightest and He couldn't talk and could crawl because he has diaper and pacifier on his mouth when he's biggest newborn baby))

In Baby Lukas's bedroom, Horrid Henry pees in his diaper so Baby Lukas came back from the school but he saw Horrid Henry like that

Horrid Henry : babbling Mmmph