A man goes to visit his 85-year-old grandpa in the hospital.
- How are you grandpa? - he asks.
- Feeling fine - says the old man.
- What's the food like?
- Terrific, wonderful menus.
- And the nursing?
- Just couldn't be better. These young nurses really take care of you.
- What about sleeping? Do you sleep okay?
- No problem at all --- nine hours solid every night. At 10 o'clock they bring me a cup of hot chocolate and a Viagra tablet, and that's it. I go out like a light.
The grandson is puzzled and a little alarmed by this, so he rushes off to question the Nurse in charge.
- What are you people doing? - he asks.
- I'm told you're giving an 85-year-old Viagra on a daily basis. Surely that can't be true?
- Oh, yes - replies the nurse.
- Every night at 10 o'clock we give him a cup of chocolate and a Viagra tablet. It works wonderfully well. The chocolate makes him sleep, and the Viagra stops him rolling out of bed.