Not My Problem!

Three older ladies were discussing the travails of getting older.

One said, "Sometimes I catch myself with a jar of mayonnaise
in my hand in front of the refrigerator and can't remember
whether I need to put it away, or start  making a sandwich."

The second lady chimed in,
"Yes, some times I find myself on the landing of the stairs
and can't remember whether I was on my way up
or on my way down."

The third one responded,
" Well, I'm glad I don't have that problem;
knock on wood," as she rapped her knuckles on the  table,
then told them:

" That must be the door, I'll get it!"