An 80 year old chap went to the chemist and asked if they sold viagra.
The chemist asked how many he wanted and the old man said,
“Can I have about 7 for the month, please?”
“Seven is not a months supply,” said the pharmacist.
“You should take one a day for them to be effective.”
“That’s OK!” replied the old man, “I break one tablet into four and just take one piece each day. I only want it to stick out enough to stop me peeing on my shoes!”.