Can you help me find the origin and full text of this saying?"?

Joli stated in a comment “I read somewhere that if you want to know what it’s like to be old, put pebbles in your shoes and wipe vaseline on your glasses.” I read this too and would like to find the reference. I went to Joli’s page but she has not been there for years. Could you help me find this document. I believe it was referenced as a grandchilds question to a grandparent?