An old man goes into a drug store to buy some Viagra

'Can I have 6 tablets, cut in quarters?'

'I can cut them for you' said Dan the pharmacist '

but a quarter tablet will not give you a full erection. '

'I'm 96' said the old man.

'I don't want an erection, I just want it sticking out far enough

so I don't pee on my slippers.'