A guy falls asleep on the beach for several hours and gets a horrible sunburn. He is taken to the hospital by ambulance and is promptly admitted after being diagnosed with second degree burns.
With his skin already starting to blister and noting the severe pain he is in, the doctor goes ahead and prescribes continuous intravenous feeding with saline, electrolytes, a sedative and a Viagra pill every four hours.
The nurse, who is rather astounded, asks, "What good will Viagra do for him now, Doctor?"
" It’ll keep the sheets off his legs."