80 yr. old man is in a nursing home and it's time for his bath.
His attractive nurse's aid unrobes him and begins to wash him.
In a moment he asks that Mabel come in and hold his penis out of
the way so that the nurse's asst can wash underneath. 'why?', asks
the aid 'i am perfectly capable of doing that and washing you
with my other hand.' 'no,I'd much rather have Mabel do that for you',
he insists. with a hint of jealousy in her voice the aid asks 'well what has
Mabel got that i haven't got?'
parkinson's disease!', the gentleman says.