Man with a bad sunburn

A man fell asleep on the beach under the noonday sun and suffered a severe sunburn and heatstroke. He was taken to the hospital where his skin was a bright red, painful and started to blister. Anything that touched him caused agony.

The doctor prescribed continued intravenious feedings of water and electolytes, a mild sedative, and Viagra.

What good will Viagra do him in that condition? the nurse inquired.

The doctor replied, It will keep the sheet off of him.