"Memories Moishe, 79, was talking to Yankel..." joke

Memories
Moishe, 79, was talking to Yankel, 83, who had just dropped in for a chat and a moan.
"Moishe, I`m not the same any more. I can`t remember so many things!"
"It vas the same thing mit myselve! But I took a memory course."
"Vos? Does this help?"
"Sure it does."
"So Moishe, tell me how this vorks."
"This is called mnemonics. You take something that reminds you of other things and so it goes."
"I vant to take this course! Vat is it called?"
"It is called...hum...the name...oy vay...Vait! Vat do you call that flower which people in love give to their girlfriends?"
"A rose, right?"
Moishe immediately shouts upstairs, "Rose, Rose my darling, what is the name of that memory course we took?"