A dad is helping his teenage son with his homework, which involves using the computer. The son is getting frustrated because the computer is running very slowly.
“Dad,” the son complains, “this computer is so old and slow! It’s practically ancient. It takes forever to load anything!”
The dad, without looking up from his newspaper, says, “Well, son, you know what they say about old computers, right?”
The son sighs dramatically. “No, Dad, what do they say?”
“They say,” the dad replies, lowering his newspaper slightly and winking, “that they have a lot of memory!”
The son groans loudly, burying his face in his hands. “Dad, please! Not now!”
The dad chuckles. “What? It’s true! They remember everything you’ve ever done on them. That’s why they’re so slow. Too many memories!”