Thin My Yellow

I've copied and pasted this from an account that I held at another site years ago, and to be quite honest, I've been pondering for some time now what I meant by the title.

Submerged in waves
No words to be heard
I don't know if I can be saved
If I need to
If I plead to
And I swim through
To the top
Or float, if I stop
Don't wait by the lake
Dig in, myth, I ink
O' as sleep odes, maybe move
Truth. 
If you really know, don't go.