unwanted thoughts

there in your brain
it starts to flower again
though you pulled it out
once and for all.
but it has spread like a tumor,
malignant, fast, and terminal,
and there's nothing you can do but succumb.
you try to burn it
but it grows back,
and you rip it to pieces
but it is suddenly whole.

like any weed,
you have to pull out the roots
to the very last fibre
before it will stay away for good.