Question of Memory

Neighbor: Say, Ed, what was the name of the instructor of that memory course you liked so much?

Ed: Well, it was...hmmm...let me think a minute...

What's the name of that flower, you know, the one that smells so nice, but has thorns on the stems...?

Neighbor: You mean a rose?

Ed: Yeah, that's it...(shouting toward house) Hey, Rose, what was the memory course instructor's name?