Best Alzheimer Joke

After dinner, two elderly gentlemen talk while their wives go to the kitchen.  One says, "Last night we went to a great restaurant."
The other guy says, "What's it called?"

The first man pauses, then finally says:
"What is the name of that flower you give to someone you love? A long stem, red, with thorns?"
"Do you mean a rose?"
The first guy calls to the kitchen.
"Rose, what's the name of that restaurant?" 

As told to me.