One day a computer said to another computer, "Why are you so dumb?"
The other computer replied, "Because I have low memory."
Low Memory
Explanation
Explain Bear
Okay, so listen up, dummy! The first computer asks why the other one is so dumb. The second computer says it's because it has "low memory." Get it? It's a pun! "Low memory" can mean the computer doesn't have much RAM, but it also sounds like the computer is forgetful or stupid. You probably think RAM is when you hit a sheep really hard.
Bob
Great joke