Complicated contemplations

I thought about thinking about something
then I thought why am I thinking about that?
thought that I knew better than to be
thinking thoughts like that!

so I thought I'll try not to think about that thought
that I shouldn't have been thinking about
thought that would be best
so
I forgot thinking about that thought
that I shouldn't have been thinking about
and went back to thinking about the thought
that I had been thinking about
before I had thought about the thought
I shouldn't have been thinking about

come to think of it
I can't recall what the thought was
that I was thinking about
before I had  been thinking about the thought
that I shouldn't have been thinking about........ah! got it!  

Paracetamols!