"Trouble Remembering" joke

Having problems remembering things, an elderly couple went to their doctor to make sure there was nothing wrong with them. After examining them, the doctor told them that physically they were fine, but they may want to start writing things down to help them remember.
Later that evening while watching TV, the man got up from his chair and his wife asked him where he was going.
"To the kitchen," he replied.
"Would you get me a bowl of ice cream?" she asked. "Perhaps you should write it down so you'll remember."
"I can remember that," he said.
"Well, I'd also like some strawberries on top," she said. "Perhaps you'd better write that down because I know you'll forget."
"I can remember that. You want a bowl of ice cream with strawberries," he replied.
"Well, I'd also like some whipped cream on top," she said. "I know you'll forget that, so perhaps you'd better write it down."
"I don't need to write that down! I can remember what you want. A bowl of ice cream with strawberries and whipped cream on top!" snapped the irritated husband as he stormed into the kitchen.
About 20 minutes later he returned and handed her a plate of bacon and eggs.
She stared at the plate for a moment and then angrily said, "I told you to write it down! You forgot my toast!"