I was walking along this short street today and found my mind drifted to other things and then came back again and I thought this has been going on for a long time.  This short street is taking an awfully long time to walk along although I'm walking quite fast.  The part of my mind drifted off, trying to remember what I had just been thinking and the other part stayed with the street which was lasting forever, and a little bit of my checked if this was a dream and it definitely wasn't.

I must have been stoned.
Have I been sleep-rolling reefers?
How long does it take to come down?

In the end, I reached the end of the street