If My Grandson Sings This Lyric-Poem? Poem by nimal dunuhinga

Grandpa old age is sad
though you smile.
Yes, yet it is sad
sad like a desperate bird
without wings?
I watched again
whenever you try to whistle
that old denture comes out
and you press it in with your shivering fingers.
It's like an exercise?
Borrowing my pastel sticks
you draw those dark figures.
Really I am scared but you mutter with them
like a singsong.
You always look at the sky
and I see something like tears
in your eyes.
It's very strange that plane with a string
you hold like a kite in your drawing?
Yes my little son otherwise she flies beyond the skies
breaking the Rainbows?