I need help for 'First Day of School' Unseen Poetry

A millionbillionwillion miles from home
Waiting for the bell to go. (To go where?)
Why are they so big, other children?
So noisy? So much at home they
Must have been born in uniform
Lived all their lives in playgrounds
Spent the years inventing games
That don’t let me in. Games
That are rough, that swallow you up.

And the railings.
All around, the railings.
Are they to keep out wolves and monsters?
Things that carry off and eat children?
Things that you don’t take sweets from?
Perhaps they’re to stop us from getting out
Running away from the lessins. Lessin.
What does a lessin look like?
Sounds small and slimy.
They keep them in glassrooms.
Whole rooms made out of glass. Imagine.

I wish I could remember my name
Mummy said it would come in useful.
Like wellies. When there’s puddles.
Lellowwellows. I wish she was here.
I think my name in sewn on somewhere
Perhaps the teacher will read it for me.
Tea-cher. The one who makes the tea.

Roger McGough

Two questions for this.
1. How is comedy and humor used in the poem?
2. Discuss the power of fantasy and imagination in the poem.

Thanks a million.
Sienna.