Moishe Tupperman prided himself and being the best piano tuner in the city. And boy, if you waited too long to call Tupperman’s Tuners, he would let you have it.
On one visit, the piano was particularly out of tune. “You have to call me to tune your piano every six months,” Moishe told his customer.
“I know,” said his customer, “but I forget.”
“Well don’t forget” said Moishe.
"If you would send out a postcard reminder like the dentist," his customer declared, "I would make sure to call you for an appointment in a timely fashion."
Without hesitating, Moishe replied, "From now on, when the dentist sends you a postcard, call me."