Younger Brother, Little Brother
There is someone with a bow and a stick, wearing horns, going down a slide. What type of person do you imagine? I'd say someone who's an immature boy. That would be your younger brother.
Just pretend you have a younger brother for now, even if you don't. Also be sure to imagine this person really vividly. He is a stereotypical little boy, playing dress up with horns and a bow and stick (he can't have an arrow, that's dangerous), and he's going down a slide too.
だい, で, てい
おとうと
None
Your younger brother loves playing dress up so much that he's now started dyeing (だい) his hair all kinds of colors. Imagine the bright red, blue, green and purple dye in his hair.
Imagine the bright red, blue, green and purple dye in your younger brother's hair. He's put so much on that he's dyed half his face too. He's going to be in trouble when he gets home!