Take up thy stethoscope and walk (Pink Floyd)
This song takes place in a hospital setting where the patient is in a great deal of pain. The lyrics don't make much sense, which could simulate the delirious condition of the patient.
This was the first song Roger Waters wrote for Pink Floyd. All of the songs on The Piper At The Gates Of Dawn were written or co-written by Syd Barrett, except for this one.
The title comes from the Bible passage John 5:8 - "Jesus saith unto him, Rise, take up thy bed, and walk." (source)